FCC ID: N7NHL78A Embedded module with Cat-M1 and NB-IoT

Sierra Wireless HL781x Product Technical Specification 41114133 Rev. 5 Product Technical Specification Important Notice Safety and Hazards Limitation of Liability Due to the nature of wireless communications, transmission and reception of data can never be guaranteed. Data may be delayed, corrupted (i.e., have errors) or be totally lost. Although significant delays or losses of data are rare when wireless devices such as the Sierra Wireless product are used in a normal manner with a well-constructed network, the Sierra Wireless product should not be used in situations where failure to transmit or receive data could result in damage of any kind to the user or any other party, including but not limited to personal injury, death, or loss of property. Sierra Wireless accepts no responsibility for damages of any kind resulting from delays or errors in data transmitted or received using the Sierra Wireless product, or for failure of the Sierra Wireless product to transmit or receive such data. Do not operate the Sierra Wireless product in areas where blasting is in progress, where explosive atmospheres may be present, near medical equipment, near life support equipment, or any equipment which may be susceptible to any form of radio interference. In such areas, the Sierra Wireless product MUST BE POWERED OFF. The Sierra Wireless product can transmit signals that could interfere with this equipment. Do not operate the Sierra Wireless product in any aircraft, whether the aircraft is on the ground or in flight. In aircraft, the Sierra Wireless product MUST BE POWERED OFF. When operating, the Sierra Wireless product can transmit signals that could interfere with various onboard systems. Note: Some airlines may permit the use of cellular phones while the aircraft is on the ground and the door is open. Sierra Wireless products may be used at this time. The driver or operator of any vehicle should not operate the Sierra Wireless product while in control of a vehicle. Doing so will detract from the driver or operators control and operation of that vehicle. In some states and provinces, operating such communications devices while in control of a vehicle is an offence. The information in this manual is subject to change without notice and does not represent a commitment on the part of Sierra Wireless. SIERRA WIRELESS AND ITS AFFILIATES SPECIFICALLY DISCLAIM LIABILITY FOR ANY AND ALL DIRECT, INDIRECT, SPECIAL, GENERAL, INCIDENTAL, CONSEQUENTIAL, PUNITIVE OR EXEMPLARY DAMAGES INCLUDING, BUT NOT LIMITED TO, LOSS OF PROFITS OR REVENUE OR ANTICIPATED PROFITS OR REVENUE ARISING OUT OF THE USE OR INABILITY TO USE ANY SIERRA WIRELESS PRODUCT, EVEN IF SIERRA WIRELESS AND/OR ITS AFFILIATES HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES OR THEY ARE FORESEEABLE OR FOR CLAIMS BY ANY THIRD PARTY. Notwithstanding the foregoing, in no event shall Sierra Wireless and/or its affiliates aggregate liability arising under or in connection with the Sierra Wireless product, regardless of the number of events, occurrences, or claims giving rise to liability, be in excess of the price paid by the purchaser for the Sierra Wireless product. Patents This product may contain technology developed by or for Sierra Wireless Inc. This product includes technology licensed from QUALCOMM. This product is manufactured or sold by Sierra Wireless Inc. or its affiliates under one or more patents licensed from MMP Portfolio Licensing. Rev. 5 October 2022 2 41114133 Preface Copyright 2022 Sierra Wireless. All rights reserved. Trademarks Sierra Wireless, AirLink, AirVantage and the Sierra Wireless logo are registered trademarks of Sierra Wireless. Windows and Windows Vista are registered trademarks of Microsoft Corporation. Macintosh and Mac OS X are registered trademarks of Apple Inc., registered in the U.S. and other countries. QUALCOMM is a registered trademark of QUALCOMM Incorporated. Used under license. Other trademarks are the property of their respective owners. Contact Information Revision History Sales information and technical support, including warranty and returns Web: sierrawireless.com/company/contact-us/

Global toll-free number: 1-877-687-7795 6:00 am to 5:00 pm PST Corporate and product information Web: sierrawireless.com Revision number Release date Changes 1.0 2.0 3.0 June 2021 Creation May 2022 May 2022 Updated:

Current consumption values Added:

Taiwan NCC Statement Rev. 5 October 2022 3 41114133 Product Technical Specification 4.0 September 2022 5.0 October 2022 Updated:

Added:

Updated:

Added:

Table 8-1 Band 8 Added RF Circuit Table 3-7, Table 3-8, Table 3-9, Table 4-10 values Table 3-9 changed to Cat-NB For Table 3-14 :

NB1 UL peak throughput value changed from 62.5 to 45.7 Subcarriers uplink changed from 3 to 12 For Table 3-15 Changed HL7810 to HL7812 Removed duplicate MCS.TBS:13 Changed NB2 UL peak throughput from 109 kbps to 159 kbps Changed Subcarriers uplink from 3 to 12 Table 8-1 and Table 8-2 values Added Standby for Table 3-6, Table 3-7, Table 3-8, Table 3-9 Added note for flash wear out feature under Table 3-5 Rev. 5 October 2022 4 41114133 Contents 1: Introduction . 8 1.1 Supported RF Bands/Connectivity . 8 1.2 Common Flexible Form Factor (CF3) . 10 1.3 Physical Dimensions and Connection Interface . 10 1.4 General Features . 12 1.5 Architecture . 14 1.6 Interfaces . 15 1.7 Environmental Specifications . 16 2: Pad Definition . 17 2.1 Pin Types . 17 2.2 Pad Configuration . 23 3: Power Specifications . 24 3.1 Power Supply . 24 3.2 Electrical Specifications . 25 3.2.1 Digital I/O Characteristics . 25 3.3 3GPP Power Saving Features . 26 3.3.1 Power Saving Mode (PSM) . 26 3.3.2 Extended DRX (eDRX) . 28 3.4 HL781x Low Power Modes . 31 3.5 Current Consumption . 33 4: Detailed Interface Specifications . 40 4.1 VGPIO . 40 4.1.1 I/O Behavior in Hibernate Mode . 41 4.2 USIM Interface . 41 4.2.1 eSIM Interface . 41 4.2.2 External UIM1 Interface . 41 4.2.3 UIM1_DET . 42 4.3 USB Interface . 42 Rev 5 October 2022 5 41114133 Product Technical Specification 4.4 General Purpose Input/Output (GPIO) . 43 4.5 Main Serial Link (UART1) . 44 4.5.1 Ring Indicator (UART1_RI or Alternative) . 46 4.5.2 UART1_RTS/UART1_CTS . 46 4.5.3 UART Application Examples . 46 4.6 Power On Signal (POWER_ON_N) . 47 4.6.1 Unmanaged POWER_ON_N (Default) . 48 4.7 Power Down, Off, and VBAT Removal . 49 4.7.1 Software Power Off in Unmanaged Mode . 49 4.7.2 Emergency Power Removal . 50 4.8 Reset Signal (RESET_IN_N) . 50 4.9 Analog to Digital Converter (ADC) . 51 4.10 Clock Interface . 52 4.11 Debug Interfaces . 52 4.11.1 Diagnostic Interface . 52 4.11.2 Modem Logs Interface (MLI) . 54 4.12 Wake Up Signal (WAKEUP) . 55 4.12.1 Wakeup from Low Power Modes . 56 4.12.2 Wakeup from OFF Mode . 56 4.12.3 Wakeup from Lite Hibernate Mode . 57 4.12.4 Wakeup from Hibernate Mode . 58 4.13 RF Interface . 59 4.13.1 RF Antenna Connection . 59 4.13.2 LTE RF Interface . 59 4.13.3 2G RF Interface (HL7812 only) . 61 4.14 TX Burst Indicator (TX_ON) . 62 4.15 Tx/Rx Activity Indicator; External RF Voltage Control . 63 4.16 GNSS . 64 4.16.1 GNSS Performance . 64 Rev 5 October 2022 6 41114133 Contents 5: Mechanical Drawings . 65 6: Design Guidelines . 67 6.1 Power Supply Design . 67 6.2 UIM1 . 67 6.3 USB Interface . 68 6.4 ESD Protection for I/Os . 69 6.5 HibernateIsolation Requirements . 69 6.5.1 VGPIO Monitoring and Buffer Control . 70 6.6 Radio Frequency Integration . 71 6.6.1 Antenna Matching Circuit . 71 6.6.2 RF Circuit . 71 7: Reliability Specification . 73 7.1 Preconditioning Test . 73 7.2 Performance Test . 73 7.3 Aging Tests . 74 7.4 Characterization Tests . 75 8: Legal Information . 76 8.1 Disposing of the Product . 76 8.2 Compliance Acceptance and Certification . 76 8.3 Regulatory and Industry Approvals/ Certifications . 76 8.4 Important Compliance Information for North American Users . 77 8.5 Legal Information Taiwan NCC Statement . 79 Appendix . 80 A.1 Website Support . 80 A.2 Reference Documents . 80 A.3 Terms and Abbreviations . 81 A.4 Ordering Information . 83 Rev 5 October 2022 7 41114133 1: Introduction 1 This document defines the high-level product features and illustrates the interfaces for Sierra Wireless HL781x Modules (HL7810, HL7812), designed for M2M and Internet of Things (IoT) markets. It covers the hardware aspects of the product series, including electrical and mechanical. For additional documentation (e.g. Firmware Customer Release Notes, AT Command Reference, etc.), refer to the module page at source.sierrawireless.com. HL781x collectively identifies HL7810 and HL7812. Variant-specific content is identified where applicable. The HL781x supports a variety of interfaces such as USB FS, UART, ADC, GPIOs, and also supports the low power consumption hibernation modes to provide customers with flexibility in implementing high-end solutions.The key differentiators between HL781x variants are regulatory and industrial approvals/

certifications, and supported radio access technologies (RATs)-HL7810 supports Cat-

M1/NB-IoT while HL7812 supports Cat-M1/NB-IoT/2G. Note: Sierra Wireless modules are shipped factory-programmed with industry or mobile operator approved firmware, according to the specific SKU ordered. Periodically, newer firmware versions become available and can include new features, bug fixes, or critical security updates. Sierra Wireless strongly recommends that customers establish their own production capability for updating module firmware on their assembled end platform, in the event that a newer firmware must be installed before deployment. Sierra Wireless also recommends customers design their products to support post-deployment FOTA upgrades using the AirVantage cloud platform. 1.1 Supported RF Bands/Connectivity The HL781x is a Sierra Wireless Ready-to-Connect (R2C) module that supports the use of its embedded SIM (eSIM) or an external SIM for global data connectivity on the RF bands detailed in the following module-specific tables. For details about using the HL781x's eSIM with Sierra Smart Connectivity, refer to [6]

Sierra Wireless Ready-to-Connect Module Integration Guide (Doc# 41113385). For additional information on Sierra Smart Connectivity, explore www.sierrawireless.com or contact Sierra Wireless. Note: The Sierra Wireless eSIM is SKU-dependent and not included in all modules. Contact Sierra Wireless for details. Rev 5 October 2022 8 41114133 Introduction Table 1-1: HL781x Supported RF Bands/Connectivity Module RF Band Transmit (TX) Frequency (MHz) Receive (Rx) Frequency (MHz) Cat-M1 Cat-NB2 2G LTE B1 19201980 LTE B2 18501910 LTE B3 17101785 LTE B4 17101755 LTE B5 824849 LTE B8 880915 LTE B12 699716 LTE B13 777787 LTE B18 815830 LTE B19 830845 LTE B20 832862 21102170 19301990 18051880 21102155 869894 925960 729746 746756 860875 875890 791821 LTE B25 18501915 19301995 LTE B26 814849 LTE B28 703748 859894 758803 LTE B66 17101780 21102200 LTE B85 698-716 GSM 850 824849 E-GSM 900 880915 DCS 1800 17101785 PCS 1900 18501910 728-746 869894 925960 18051880 19301990 HL7810 HL7812 HL7812 Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Ya Y Ya Ya Y Ya Ya Y Y Y Ya Ya Y Ya Ya Y Y Y Y a. To ensure FCC compliance near NB band edges, Cat-NB2 supported TX channel ranges do not include outer chan- nels. Sup-

ported channels ranges are:

B2: 1860219198 B4: 1995220398 B5: 2040220648 B12: 2301223178 B13: 2318223278 B25: 2604226688 B26: 2669227038 B66: 131974 - 132670 B85: 134004134179 Rev 5 October 2022 9 41114133 Product Technical Specification 1.2 Common Flexible Form Factor (CF3) The HL781x belongs to Sierra Wireless Common Flexible Form Factor (CF3) family of WWAN modules. These modules share a compatible footprint. The CF3 form factor provides a unique solution to a series of problems faced commonly in the WWAN module space as it:

Accommodates multiple radio technologies (from GSM to LTE advanced) and band groupings Offers electrical and functional compatibility Provides direct mount, as well as socket mount (depending on customer needs, e.g. for use in development kits or for prototype development) 1.3 Physical Dimensions and Connection Interface HL781x modules are compact, robust, fully shielded industrial-grade embedded modules with the dimensions noted in Table 1-2 Table 1-2: Module Dimensionsa Parameter Nominal Tolerance Units Length Width Thickness Weight 18.0 15.0 2.4 1.17 0.10 0.10 0.20 0.24 mm mm mm g a. Typical dimensional values, accurate as of the release date of this document. All electrical and mechanical connections to the HL781x module are made through the 86 Land Grid Array (LGA) pads on the bottom side of the PCB. Rev 5 October 2022 10 41114133 Introduction Figure 1-1: Mechanical Overview Table 1-3 describes the LGA pads. Table 1-3: LGA Pad Types / Distribution Pad Type Quantity Dimensions Signal pads 66 pads 1.00.5 mm Pitch 0.8 mm Ground pads 4 outer corner pads 0.850.97 mm

16 inner pads 1.01.0 mm 1.825 mm/1.475 mm Rev 5 October 2022 11 41114133 Product Technical Specification 1.4 General Features Table 1-4 summarizes the HL781x's features. Table 1-4: General Features Feature Description Physical Power supply Small form factor (86-pad solderable LGA pad). See Physical Dimensions and Connection Interface for details. Metal shield can RF connection pads (RF_MAIN and RF_GNSS) Baseband signals connection 3.24.35 V supply voltage (VBAT_BB, VBAT_RF) Single supply (recommended)VBAT (VBAT_BB tied to VBAT_RF) or Dual suppliesSingle supply each for VBAT_BB and VBAT_RF 850/900 Power Class 4 (33 dBm), GPRS Class 10 1800/1900 Power Class 1 (30 dBm), GPRS Class 10 2G (HL7812 only) Cat-M1 GNSS See GNSS details. Power Class 3 (23 dBm) Cat-NB2 Power Class 3 (23 dBm) RF GPS1575.42 MHz GLONASS1589.06251605.375 MHz Note: The GNSS receiver and LTE/GSM receiver share the same RF resources, therefore GNSS can only be used when the module is not actively connected on LTE/GSM. An example of a suitable implementation of GNSS in an end product would be the use of GNSS positioning for asset management applications where infrequent and no real-time position updates are required. SIM interface Note: The GNSS feature is not supported in NB-IoT mode. 1.8V support SIM extraction / hot plug detection SIM/USIM support Conforms with ETSI UICC Specifications Supports SIM application tool kit with proactive UICC commands Application interface AT command interface3GPP 27.007 standard, plus proprietary extended AT commands CMUX multiplexing over UART USB Full Speed (FS) Rev 5 October 2022 12 41114133 Table 1-4: General Features (Continued) Feature Description Introduction Protocol stack GPRS Class 10 2G (HL7812 only) Cat-M1 3GPP Rel. 14:

Up to 1100 kbit/s UL, 590 kbit/s DL HARQ-ACK bundling in HD-FDD 10 DL HARQ processes Faster frequency returning Release Assistance Indication Half-duplex Channel bandwidth1.4 MHz LTE carrier bandwidth1.4/3/5/10 /15/20 MHz Extended Coverage Mode A PSM (Power Save Mode) I-DRX (Idle Mode Discontinuous Reception) C-DRX (Connected Mode Discontinuous Reception) Idle mode mobility Connected mode mobility eDRX (Extended Discontinuous Reception) Control Plane CIoT Optimization (Data over NAS) NB-IoT 3GPP Rel. 14:

Up to 158 kbit/s UL, 127 kbit/s DL 2 HARQ processes Release Assistance Indication Long DRX values with regular wake-up cycle) Cat-NB2 Half-duplex Channel bandwidth180 kHz LTE carrier bandwidth1.4/3/5/10 /15/20 MHz Operational modeIn-band, Guard band, Standalone Control Plane CIoT Optimization (Data over NAS) NIDD over SGi tunneling NIDD over SCEF Extended coverage PSM (Power Save Mode) I-DRX (Idle Mode Discontinuous Reception) C-DRX (Connected Mode Discontinuous Reception) Idle mode mobility eDRX (Extended Discontinuous Reception) Flexible selection Manual system selection across RATs Dynamic system selection across RATs (preferred RAT) Rev 5 October 2022 13 41114133 Product Technical Specification Table 1-4: General Features (Continued) Feature Description Connectivity Multiple cellular packet data profiles Sleep mode for minimum idle power draw Mobile-originated PDP context activation / deactivation Static and Dynamic IP address. The network may assign a fixed IP address or dynamically assign one using DHCP (Dynamic Host Configuration Protocol). PDP context type (IPv4, IPv6, IPv4v6) RFC1144 TCP/IP header compression Environmental Operating temperature ranges Class A: -30C to +70C Class B: -40C to +85C RTC Real Time Clock (RTC) 1.5 Architecture Figure 1-2 presents an overview of the HL781x's internal architecture and external interfaces. Figure 1-2: Architecture Overview Rev 5 October 2022 14 41114133 1.6 Interfaces Introduction The HL781x provides the following interfaces and peripheral connectivity:

(1) VGPIO (1.8V) See VGPIO

(1) 1.8V USIM See USIM Interface

(1) USB 2.0 FS See USB Interface.

(12) GPIOs See General Purpose Input/Output (GPIO).

(1) 8-wire UART See Main Serial Link (UART1).

(1) Active low power on signal (will be available in a future firmware release) See Power On Signal (POWER_ON_N).

(1) Active low reset signal See Reset Signal (RESET_IN_N).

(2) ADC See Analog to Digital Converter (ADC).

(2) System clock out (32.768 kHz and 26 MHz) See Clock Interface.

(1) 4-wire UART for debug interface only See Debug Interfaces.

(1) Wake up signal See Wake Up Signal (WAKEUP).

(1) Main RF Antenna See RF Interface.

(1) TX_ON indicator See TX Burst Indicator (TX_ON).

(1) GNSS Antenna See GNSS.

(1) External PA Voltage Control Indicator SeeTx/Rx Activity Indicator; External RF Voltage Control. Table 1-5: ESD Specificationsa Category Connection Specification Operational Power supply (C61, C62, C63) RF ports (C38, C49) Non-operational All pins IEC-61000-4-2 (Electrostatic Discharge Immunity Test) 6 kV Contact 8 kV Air Unless otherwise specified:

JESD22-A114 250 V Human Body Model JESD22-C101C 250V Charged Device Model a. ESD protection is highly recommended on customer platform. For details, see ESD Protection for I/Os Rev 5 October 2022 15 41114133 Product Technical Specification 1.7 Environmental Specifications The environmental specifications for operation and storage of the HL781x are defined in Table 1-6. Table 1-6: Environmental Specifications Parameter Range Operating Class Ambient Operating Temperature

-30C to +70C

-40C to +85C Class A Class B Ambient Storage Temperature

-40C to +85C

Class A is defined as the operating temperature range within which the device:

Shall exhibit normal function during and after environmental exposure. Shall meet the minimum requirements of 3GPP or appropriate wireless standards. Class B is defined as the operating temperature range within which the device:

Shall remain fully functional during and after environmental exposure Shall exhibit the ability to establish any of the devices supported call modes

(SMS, Data, and emergency calls) at all times even when one or more environ-

mental constraint exceeds the specified tolerance. Unless otherwise stated, full performance should return to normal after the excessive constraint(s) have been removed. Rev 5 October 2022 16 41114133 2: Pad Definition 2 Sierra Wireless HL781x pins are divided into three categories. Core functions and associated pins Cover all the mandatory features for M2M connectivity and will be available by default across the CF3 module family. These Core functions are always available and always at the same physical pad locations. A customer platform using only these functions and associated pads is guaranteed to be forward and/or backward compatible with the next generation of CF3 modules. Extension functions and associated pins Bring additional capabilities to the customer. Whenever an Extension function is available on a module, it is always at the same pad location. Custom functions and associated pins Module-specific functionality. If a custom function is available on another module, there is no guarantee that it will be at the same pad location. For example:

UART1 interface is a "Core" function on pins C2C9 that is available on all CF3 modules (including HL781x). USB interface is an "Extension" function on pins C12C13 that is available on HL781x modules, but may not be available on certain other CF3 modules. UART0 signals are "Custom" functions on pins C57 and C58. These signals may or may not be available on other CF3 modules and, if available, may be on different pins. Pins marked as "Not connected" should not be used. 2.1 Pin Types Table 2-1 lists a series of codes used to identify pin characteristics throughout this document. Table 2-1: Pin Type Codes Code Definition Code Definition AI ANT GND I I/O N/A Analog Input Antenna Ground Digital Input Digital Input/Output Not applicable O PD PI PO PU Digital Output Pull-down enabled Power In Power Out Pull-up enabled Rev 5 October 2022 17 41114133 Product Technical Specification Table 2-2: Pin Definitions Pin Signal Name Group I/O Voltage Supply Domain Function Recommendation for unused pads Isolate requireda CF3 C1 C2 C3 C4 C5 C6 C7 C8 C9 GPIO1 UART1_RIc UART1_RTS UART1_CTS UART1_TX UART1_RX UART1_DTR UART1_DCD UART1_DSR C10 GPIO2 GPIOb UART1b UART1b UART1b UART1b UART1b UART1b UART1b UART1b GPIOb I/O 1.8V (VGPIO) General purpose input/output Leave open O I O I O I O O 1.8V (VGPIO) UART1 Ring Indicator Leave open 1.8V (VGPIO) UART1 Request To Send Mandatory connection 1.8V (VGPIO) UART1 Clear To Send Mandatory connection 1.8V (VGPIO) UART1 Transmit Data Mandatory connection 1.8V (VGPIO) UART1 Receive Data Mandatory connection 1.8V (VGPIO) UART1 Data Terminal Ready Leave open 1.8V (VGPIO) UART1 Data Carrier Detect Leave open 1.8V (VGPIO) UART1 Data Set Ready Leave open I/O 1.8V (VGPIO) General purpose input/output Leave open C11 RESET_IN_N H/W Controld I Internal Bias Input reset signal Leave open C12 USB_D-

C13 USB_D+

C14 NC C15 NC USB USB Not connected Not connected I/O I/O 3.3V 3.3V USB Data Negative (Full Speed) Leave open USB Data Positive (Full Speed) Leave open Not Connected Not Connected See footnotee See footnotee Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No No No No No Extension Core Core Core Core Core Core Core Core Core Core Extension Extension Not connected Not connected C16 USB_VBUS USB PI 5V USB VBUS If USB is:

Not usedLeave open UsedMandatory connection No Extension C17 NC Not connected Not Connected See footnotee No Rev 5 October 2022 18 Not connected 41114133 Pad Definition Table 2-2: Pin Definitions (Continued) Pin Signal Name Group I/O Voltage Supply Domain Function Recommendation for unused pads Isolate requireda CF3 C18 NC C19 NC C20 NC C21 VBAT_BB C22 26M_CLKOUT C23 32K_CLKOUT C24 ADC1 C25 ADC0 C26 UIM1_VCC C27 UIM1_CLK C28 UIM1_DATA C29 UIM1_RESET Not connected Not connected Not connected Power Clockb Clockb ADCb ADCb UIMb UIMb UIMb UIMb Not Connected Not Connected Not Connected See footnotee See footnotee See footnotee PI O O AI AI 1.84.35 V Power supply for RTC backup Leave open 1.8V (VGPIO) 26 MHz System Clock Output Leave open 1.8V (VGPIO) 32.768 kHz System Clock Output Leave open 1.8V (VGPIO) Analog to digital converter Leave open 1.8V (VGPIO) Analog to digital converter Leave open PO 1.8V USIM1 Power supply O 1.8V (VGPIO) USIM1 Clock I/O 1.8V (VGPIO) USIM1 Data O 1.8V (VGPIO) USIM1 Reset Leave open Leave open Leave open Leave open C30 RF_DIV_GND_1 Ground GND Ground Ground Mandatory connection C31 NC Not connected C32 RF_DIV_GND_2 Ground GND Ground C33 Reserved C34 Reserved C35 Reserved C36 Reserved Rev 5 October 2022 Reserved Reserved Reserved Reserved Not Connected See footnotee Ground Reserved Reserved Reserved Reserved 19 Mandatory connection Leave openf Leave openf Leave openf Leave openf No No No No Yes Yes Yes Yes No No No No No No No No No No No Not connected Not connected Not connected Extension Extension Extension Extension Extension Core Core Core Core Extension Not connected Extension Extension Extension Extension Extension 41114133 Product Technical Specification Table 2-2: Pin Definitions (Continued) Pin Signal Name Group I/O Voltage Supply Domain Function Recommendation for unused pads Isolate requireda CF3 C37 RF_GNSS_GND_1 Ground GND Ground Ground (RF_GNSS) Mandatory connection C38 RF_GNSS Antenna ANT GNSS antenna input Leave open C39 RF_GNSS_GND_2 Ground GND Ground Ground (RF_GNSS) Mandatory connection C40 GPIO7 GPIO8 C41 VBAT_PA_EN C42 NC C43 Reserved C44 WAKEUP I/O I/O O GPIOb GPIOb Not connected Reserved 1.8V (VGPIO) General purpose input/output Leave open 1.8V (VGPIO) General purpose input/output Tx/Rx activity indicator/External RF voltage control Not Connected Reserved Leave open See footnotee Leave openf H/W Controld I 1.8V Wake up signal Mandatory connection C45 VGPIO Power PO 1.8V (VGPIO) GPIO voltage output (reference voltage) Leave open C46 GPIO6 C47 NC GPIOb Not connected I/O 1.8V (VGPIO) General purpose input/output Leave open Not Connected Leave opene C48 RF_MAIN_GND_1 Ground GND Ground Ground (RF_MAIN) Mandatory connection C49 RF_MAIN Antenna ANT Main RF antenna input/output

(Rx/Tx) Mandatory connection C50 RF_MAIN_GND_2 Ground GND Ground Ground (RF_MAIN) Mandatory connection GPIO14 C51 UART3_CTS GPIOb UART3b I/O O 1.8V (VGPIO) General purpose input/output

(MLI debug) UART3 Clear To Send Leave open No No No Yes Yes No No No No Yes No No No No Yes Core Extension Core Core Core Custom Not connected Extension Extension Core Core Not connected Core Core Core Extension Custom Rev 5 October 2022 20 41114133 Pad Definition Table 2-2: Pin Definitions (Continued) Pin Signal Name Group C52 C53 C54 GPIO10 UART3_TX GPIO11 UART3_RTS GPIO15 UART3_RX C55 UART0_RX C56 UART0_TX C57 UART0_CTS C58 UART0_RTS GPIOb UART3b GPIOb UART3b GPIOb UART3b UART0b UART0b UART0b UART0b C59 POWER_ON_N H/W Controld C60 TX_ON Indicationb C61 VBAT_RF Power C62 VBAT_RF Power C63 VBAT_BB Power I/O I/O I I/O I I/O O O I O I I O PI PI PI Voltage Supply Domain Function Recommendation for unused pads Isolate requireda CF3 1.8V (VGPIO) General purpose input/output

(MLI debug) UART3 Transmit data General purpose input/output Leave open 1.8V (VGPIO)

(MLI debug) UART3 Request To Send Leave open 1.8V (VGPIO) General purpose input/output

(MLI debug) UART3 Receive data 1.8V (VGPIO) Debug Receive data 1.8V (VGPIO) Debug Transmit data 1.8V (VGPIO) Debug Clear To Send Leave open Leave open Leave open Leave open 1.8V (VGPIO) Debug Request To Send Leave open Internal Bias Active-low Power On control signal Leave open 1.8V (VGPIO) TX transmission indication Leave open Yes Yes Yes Yes Yes Yes Yes No Yes Extension Custom Extension Custom Extension Custom Extension Extension Custom Custom Core Extension 3.2V (min) 3.7V (typ) 4.35V

(max) 3.2V (min) 3.7V (typ) 4.35V

(max) 3.2V (min) 3.7V (typ) 4.35V

(max) Power supply Mandatory connection No Core Power supply Mandatory connection No Core Power supply Mandatory connection No Core Rev 5 October 2022 21 41114133 Product Technical Specification Table 2-2: Pin Definitions (Continued) Pin Signal Name Group I/O Voltage Supply Domain Function Recommendation for unused pads Isolate requireda CF3 C64 UIM1_DET GPIO3 C65 GPIO4 C66 GPIO5 CG1-

CG4 G1-

G16 GND GND UIM1b GPIOb GPIOb GPIOb I I/O I/O I/O UIM1 Detection 1.8V (VGPIO) Leave open General purpose input/output 1.8V (VGPIO) General purpose input/output Leave open 1.8V (VGPIO) General purpose input/output Leave open Ground GND Ground Ground Mandatory connection Ground GND Ground Ground Mandatory connection Yes Yes Yes No No Core Extension Extension Extension Core Core a. The host platform should isolate these signals during module Hibernate mode to prevent back-powering the module. For details, see HibernateIsolation Requirements. b. By default, signals in group (GPIO, UART, UIM1, ADC, Clock, Indication) are hardware-configured as inputs and are in an undefined state during OFF, reset, and Hibernate modes. The host should ignore all activity on these signals until the module has initialized and reached AT-READY (UART1_CTS transitions from high to low (and stays low) and VGPIO is high, indicating the UART and USB interfaces are ready). For timing details, see Unmanaged POWER_ON_N (Default) and Wakeup from OFF Mode. For further infor-

mation regarding pre- and post-AT-READY signal states, contact Sierra Wireless. c. UART1_RI cannot be used in Hibernate mode. A GPIO (GPIO2 by default) can be configured as an alternate ring indicator. For details, see Ring Indicator (UART1_RI or Alterna-

tive). d. Hardware Control signals are available in all module operational modes and determine module behavior. For recommendations on managing these signals, see associated signal topics in Detailed Interface Specifications. e. Pin is not connected internally, but is reserved for future use. Leave unconnected to ensure compatibility with other Sierra Wireless CF3 modules. f. Pin is connected internally, leave open. Rev 5 October 2022 22 41114133 Pad Definition 2.2 Pad Configuration S T C _ 3 T R A U

4 1 O I P G 2 _ D N G _ N A M _ F R I 1 _ D N G _ N A M _ F R I I N A M _ F R 6 O I P G O I P G V C N P U E K A W d e v r e s e R C N N E _ A P _ T A B V

8 O I P G 2 _ D N G _ S S N G _ F R S S N G _ F R 1 _ D N G _ S S N G _ F R 7 O I P G d e v r e s e R d e v r e s e R d e v r e s e R GND CG4 1 1 5 5 C C 0 5 C 9 4 C 8 4 C 7 4 C 6 4 C 5 4 C 4 4 C 3 4 C 2 4 C 1 1 4 4 C C 0 4 C 9 3 C 8 3 C 7 3 C 6 3 C 5 3 C 4 3 C CG3 GND Corepin Extensionpin Custompin GPIO10/UART3_TX GPIO11/UART3_RTS GPIO15/UART3_RX UART0_RX UART0_TX UART0_CTS UART0_RTS POWER_ON_N TX_ON VBAT_RF VBAT_RF VBAT_BB UIM1_DET/GPIO3 GPIO4 GPIO5 C52 C52 C53 C53 C54 C54 C55 C56 C57 C58 C59 C60 C61 C62 C63 C64 C65 C66 G13 G14 G15 G16 G9 G5 G1 G10 G11 G12 GND G6 G2 G7 G3 G8 G4 C33 C32 C31 C30 C29 C28 C27 C26 C25 C24 C23 C22 C21 C20 C19 Reserved RF_DIV_GND_2 NC RF_DIV_GND_1 UIM1_RESET UIM1_DATA UIM1_CLK UIM1_VCC ADC0 ADC1 32K_CLKOUT 26M_CLKOUT VBAT_BB NC NC GND CG1 1 C 2 C 3 C 4 C 5 C 6 C 7 C 8 C 9 C 0 1 C 1 1 C 2 1 C 3 1 C 4 1 C 5 1 C 6 1 C 7 1 C 8 1 C CG2 GND 1 O I P G I R _ 1 T R A U S T R _ 1 T R A U S T C _ 1 T R A U X T _ 1 T R A U X R _ 1 T R A U R T D _ 1 T R A U D C D _ 1 T R A U R S D _ 1 T R A U 2 O I P G N _ N I _ T E S E R D _ B S U

D _ B S U C N C N C N C N S U B V _ B S U Figure 2-1: Pad Configuration (Top View through Module) Rev 5 October 2022 23 41114133 3: Power Specifications 3 Note: If not specified, all electrical values are given for VBAT_BB and VBAT_RF = 3.7V, operating temperature of 25C. and with conducted 50? load on RF port(s). 3.1 Power Supply The module is supplied through the VBAT_BB and VBAT_RF signals. For standard applications, VBAT_BB and VBAT_RF must be tied externally to the same power supply. For some specific applications (e.g. applications requiring a lower VBAT_RF), the module supports separate VBAT_BB and VBAT_RF connection as per Table 3-1. Table 3-1 and Table 3-2 describe the Power Supply interface. Table 3-1: Power Supply Pin Description Pad #

C63 C61, C62 Signal Name I/O Description VBAT_BB VBAT_RF PI PI Power supply (baseband) Power supply (radio frequency) C30, C32, C37, C39, C48, C50, CG1 CG4, G1G16 GND Ground Caution: Operation outside the minimum/maximum specified operating voltage (Table 3-2) is not recommended, and functional operation of the device and specified typical performance are neither implied nor guaranteed. Rev. 5 October 2022 24 41114133 Power Specifications Table 3-2: Power Supply Current Requirements Parameter VBAT_BB voltage VBAT_RF voltage Full Specification VBAT_RF voltage Extended Range Power Supply Ripple Max Supply Current VBAT_BB VBAT_RF (LTE)

(HL7812 only) VBAT_RF (2G) Peak Current Min 3.2 3.2 2.8a

Typ Max Unit Notes Must be within min/

max values overall operating conditions

(including voltage ripple, droop, and transient) 3.7 3.7 3.7

4.35 4.35 4.35 100b 180

(HL7810 / ) 300

(HL7812) 400 1.9 2.5 V V V mVpp mA mA A a. 3GPP performance is not guaranteed for VBAT_RF from 2.8-3.2V. Note that operation in this range requires a separate VBAT_RF supply. b. Measured at nominal supply voltage (3.7V), nominal ambient temperature (25C), and with conducted 50 load on RF port(s). Note: The host power supply should be capable of supplying VBAT_BBmax + VBAT_RFmax. 3.2 Electrical Specifications 3.2.1 Digital I/O Characteristics The I/O characteristics for supported digital interfaces/signals are described in Table 3-3. These interfaces/signals include:

UARTs GPIOs Clock output signals UIM1 TX_ON External PA voltage control indicator These signals are not available in Hibernate mode since VGPIO is OFF. Note: The host platform should isolate these signals during module Hibernate mode to prevent back-powering the module. For details, see HibernateIsolation Requirements. Rev. 5 October 2022 25 41114133 Product Technical Specification Table 3-3: Digital I/O Electrical Characteristics (1.80V)a Parameter Description Min Max Unit VIH VIL VOH VOL IO IRPD IRPU RPU RPD Logic High Input Voltage 0.7 VGPIO VGPIO Logic High Input Voltage 0 0.3 VGPIO Logic High Input Voltage 0.8 VGPIO Logic High Input Voltage Output Current Internal Pull-Down Resistor current Internal Pull-Up Resistor current Internal Pull-Up Resistor 2 11 11 13 Internal Pull-Down Resistor 13.6 0.2 VGPIO 4 43 44 45 45 V V V V mA A A k k a. VGPIO=1.8V (See VGPIO.) 3.3 3GPP Power Saving Features This section describes 3GPP power saving features (PSM, eDRX) that are supported by the HL781x module. Per 3GPP specifications, these features pertain to the modules cellular communication. The HL781x also features low power modes that contribute to power savings by selectively limiting or turning off other elements of the module, such as memory states, I/O states, etc. (For details, see HL781x Low Power Modes.) 3.3.1 Power Saving Mode (PSM) Power Saving Mode (PSM) is a 3GPP feature that allows the Sierra Wireless HL781x to minimize power consumption by registering on a PSM-supporting LTE network and then entering PSM state for a configured duration. Rev. 5 October 2022 26 41114133 Power Specifications Module connected, typical current consumption Connected Idle T3324

(ActiveTimer) Idle mode, accessible from network, lower current consumption than connected mode PSM (very low current consumption compared to connected mode) PSMdorm ant PSMdormantperio d(T3412T3324) PSMDurationTimer(ExtendedT3412) Modulemaybewo kenatan ytimebyhostapp lic ation,orwakesautomaticallywhenT3412expires Figure 3-1: PSMTimers When the module enters the PSM state:

1. The module remains active (accessible from the network) in a lower-power idle state for a short period (T3324 Active Timer). 2. The module then drops to a very-low power dormant state for the remainder of the PSM duration or until the host platform wakes the module to initiate a network contact. During this dormant period, the module is not accessible from the network. 3. After the module contacts the network (for either reason), the process repeats. Using PSM, an HL781x-based host platform can reduce power consumption significantly because:

It can enter a very low power state (~1.8 ?A) during a very long PSM dormant period. The platform can wake the HL781x at any time to initiate data transaction immediately with minimal overhead (signaling/procedure) since the network keeps the module registered during the entire PSM period. Typical candidates for PSM are systems (such as monitors and sensors) that:

Require long battery life (low power consumption) Infrequently send mobile originated data (every few hours, days, weeks, etc.), with optional reply data from the network Tolerate modules being inaccessible for long periods of time Do not use mobile-terminated voice/data/SMS. If the host platform needs the module to be able to receive mobile-terminated data, eDRX is a more suitable option. Figure 3-2 describes an example of a module operating in PSM. In a typical application, the module will always be woken from the dormant state to transmit data (illustrated in the Typical MO Use Case portion of the figure). This is accomplished by setting the T3412 timer much longer than anticipated transmission frequency. However, if the module is not woken by the host, a TAU will be sent when T3412 expires

(illustrated in the Default PSM Use Case portion of the figure). By setting the T3412 longer, unnecessary TAU transmissions can be avoided. For a more detailed explanation of PSM, refer to HL78xx Low Power Modes Application Note (Doc# 2174229). Rev. 5 October 2022 27 41114133 Product Technical Specification 1.Moduleattacheson network 2.UserenablesPSM. 3.ModulerequestsuserspecifiedActive TimerandPSMTimer. 4.Networkrespondswithnegotiated timerstouse. 5.Moduleentersandstaysinidlemode untilitremainsuninterruptedforthe ActiveTimerduration. 6.Moduleenters PSM(dormant,very lowpower) n o i t p m u s n o C r e w o P ATTACH Connected BOOT TypicalMOUseCase

(mostpowerefficient) 8.Moduletransmitsdatato thenetwork. 7.Interrupted byWAKE_UP. Transmit data

(Possible Rx) DefaultPSMBehaviourONT3412Expiry 11.ModuletransmitsperiodicTAU tothenetwork . 9.PSMprocessrepeats( enablePSM, requesttimers,etc.) 12.PSMprocessrepeats 10.PSMTimerexpires andmodulewakesto sendperiodicTAU. TAU BOOT Idle PSMdormant BOOT Idle PSMdormant Idle PSMdormant T3324(ActiveTimer) T3324(ActiveTimer) ExtendedT3412(PSMTimer)(InterruptedbyUEusingWAKE_UP) ExtendedT3412(PSMTimer)

(Runsuntiltimerexpires) Figure 3-2: Power Saving ModeUse Cases Example 3.3.2 Extended DRX (eDRX) 3.3.2.1 eDRX Overview Extended Idle DRX (I-eDRX) is a 3GPP-specified extension of the Discontinuous Reception (DRX) low power consumption feature. This extension reduces the number of paging opportunities (PO) the module must monitor while in idle state, resulting in a corresponding decrease in power consumption. Many data module applications are tolerant to delays in downlink data packets so extending the period between paging opportunities would allow for current consumption savings for these applications. Module operating in connected state Network releases UE due to inactivity Calibrations Paging Opportunity eDRX Connected Idle Very long sleep duration low consumption for entire duration PTW eDRXCycle Moduleop eratinginIdleeDRX(TIe DRX) Module operating in connected state Network releases UE due to inactivity Paging Opportunity DRX Connected Idle Regular DRX intervals n o i t p m u s n o C r e w o P n o i t p m u s n o C r e w o P Figure 3-3: eDRX vs DRX Moduleop eratinginIdleDRX (TIDRX) Rev. 5 October 2022 28 41114133 Power Specifications As shown in Figure 3-3, the HL7812 supports eDRX, taking advantage of the feature by monitoring a set number of paging opportunities in a Paging Time Window (PTW) and then entering a low power state between PTWs. This sequence (PTW followed by low power state) comprises a single eDRX cycle. The size of the PTW and the length of the eDRX cycle (TI-eDRX) are negotiated between the module (which submits desired values when enabling eDRX) and the network (which indicates the values that will actually be used). The module remains in I-eDRX until it detects a page from the network during a PO or needs to access the network (e.g. to make a data connection, send a mobility TAU or periodic TAU, etc.), at which time it returns to the connected state. Note that for a short period of time immediately after the module is released from connected state by the network and enters idle state, it has a few extra short wake ups for clock calibration (shorter than a single PO). Figure 3-4 shows an eDRX power consumption profile with a periodic TAU event. Notice that after the TAU, the eDRX 81.92s cycle is restored slowly by several iterations from 10s to 20s then to 40s before reaching the 81.92s wake. This behavior is an HL781x design feature and cannot be modified. Figure 3-4: eDRX Power Consumption Profile Interruption For a more detailed explanation of eDRX, refer to HL78xx Low Power Modes Application Note. Rev. 5 October 2022 29 41114133 Product Technical Specification 3.3.2.2 Configuring eDRX Table 3-4 describes available methods for configuring eDRX. Table 3-4: eDRX-Related Commands AT Command Description AT+CEDRXS AT+KEDRXCFG Enable/disable eDRX and configure related settings AT+CEDRXRDP Display current eDRX settings For example:

Use AT+CEDRXS to configure the desired TI-eDRX value. During the network attach or TAU process:

Module sends eDRX request with the settings (as specified in AT+CEDRXS) to the network. Network response indicates if the module may use eDRX and the eDRX param-

eters that should be used. The network may adjust the eDRX parameters from those requested by the module. If eDRX is accepted by the network, the module only needs to monitor during the eDRX paging opportunities. The module may enter low power mode state between the eDRX paging opportunities (depending on the module configuration). Note that:

eDRX parameters must be carefully selected to match the intended use case(s) for the module. Given that the module can only be paged at an eDRX paging opportunity:

Longer eDRX cycles will delay (increase the latency of) mobile terminated data reception. Shorter eDRX cycles will reduce the latency but will also reduce the eDRX power savings. Setting a cycle longer than 81.92s may not improve power saving significantly, since the module will wake every 81.92s to do a clock calibration. The duration of the eDRX cycle should be appropriately selected for the specific use case. Network-side store and forward is supported Packets will be stored until the module's next eDRX paging opportunity or, if the network has a storage time limit, until that limit is reached. Rev. 5 October 2022 30 41114133 3.3.2.3 Concurrent PSM and eDRX Power Specifications eDRX may be performed during the Active Timer (T3324) window of PSM. For example, if PSM and eDRX are configured with the following settings:

PSM:

T3412 (PSM Timer) 86400s (24 hours) T3324 (Active Timer) 327.68s (~5.5 minutes) eDRX:

eDRX cycle time 81.92s Assuming the network does not attempt to contact the module after the module leaves the connected state and enters PSM idle state, the module will stay in the idle state for 327.68 seconds (the Active Timer). While in the idle state, the module will be in eDRX power saving mode for 4 cycles of 81.92 seconds each, and then go to PSM dormant state for ~23h55m until the T3412 timer expires. At that point the module wakes, sends a periodic TAU, and then the PSM process repeats. 3.4 HL781x Low Power Modes In addition to the 3GPP power saving features Power Saving Mode (PSM) and Extended DRX (eDRX), the HL781x supports the low power modes in Table 3-5. Table 3-5: Low Power Modes Power Mode Possible Modem State Impact on Module Hardware Wake-Up Signal Sources Sleep Stack OFF, DRX, eDRX, PSM, No service 26 MHz system clock is OFF Application processor is idle Modem is out-of-coverage, sleeping, WAKEUP UART1_DTRa RTC alarm event or off I/Os are retained Lite Hibernate Stack OFF, eDRX, PSM, No service 26 MHz system clock is OFF Application processor is OFF Modem is out-of-coverage, sleeping, WAKEUP UART1_DTRa RTC timeout interrupt or off Flash memory and most RAM is off

(some retention memory remains on) I/Os are retained Rev. 5 October 2022 31 41114133 Product Technical Specification Table 3-5: Low Power Modes (Continued) Power Mode Possible Modem State Impact on Module Hibernate Stack OFF, eDRX, PSM, No service OFF Stack OFF Hardware Wake-Up Signal Sources WAKEUP RTC timeout interrupt WAKEUP 26 MHz system clock is OFF Application processor is OFF Modem is OFF Flash memory and most RAM is off

(some retention memory may remain on, PSM/eDRX-dependent) I/Os are not retained (e.g. in an undefined state) 26 MHz system clock is OFF & RTC clock is OFF Application processor is OFF Modem is OFF Flash memory and RAM off I/Os are not retained (e.g. in an undefined state) a. Only if configured with +KSLEEP <mngt> parameter set to 0 An end product uses the AT+KSLEEP command to specify the preferred lowest power mode. Then when the module sleeps, its power management algorithm determines the appropriate mode based on the module's current operating requirements. Note: When a module that is configured for PSM enters Hibernate mode, its non-persistent configu-

rations are lost (just like when it power cycles). Refer to HL78xx AT Commands Interface Guide

(Doc# 41111821), Command Timeout and Other Information to identify commands that manage persistent configurations. Warning: If USB_VBUS is powered and the USB interface is enabled, it will not be possible to enter Lite Hibernate or Hibernate mode. For additional low power mode details (including the relationship between 3GPP power saving features and HL781x power modes), refer to HL78xx Low Power Modes Application Note (Doc# 2174229). For band selection details (which impact power consumption), refer to HL78xx Customization Guide Application Note (Doc# 2174213). Note: To prevent flash wear out, the module includes a feature for flash wear out protection. This feature prevents entering Hibernate mode if less than 30 minutes passed since the last Hibernate mode, or less than 30 minutes of Hibernate sleep is expected. Rev. 5 October 2022 32 41114133 Power Specifications 3.5 Current Consumption This section describes the HL781x modules current consumption under various power states/modes. Low Power Current Consumption Modes Table 3-6 to Table 3-9 Connected Mode Table 3-10 to Table 3-14 Note: The modules current consumption will depend on the actual operating/environmental condi-

tions of the customer platform. The current consumption measurements presented in this section (Table 3-6 to Table 3-14) are typical values obtained under the following test conditions:

Nominal supply voltage3.7V Nominal ambient temperature25C Conducted 50 load on RF port(s) External UICC/USIM that can be activated In addition, the following conditions apply to Hibernate and OFF mode measurements:

VGPIO is OFF Customer platform ensures module I/Os are not driven > 0.2V External UICC/USIM that is pre-configured to allow the module to automatically disable the USIM power.

(See HL78xx Low Power Modes Application Note (Doc# 2174229) for details.) WAKEUP signal Low For detailed low power current consumption information, refer to HL78xx Low Power Modes Appli-

cation Note (Doc# 2174229). Table 3-6: HL7810 / LPM Current Consumption - Cat-M1a Modem Radio State Lowest Power Mode Details OFF OFF Module is switched off by AT command

(+CPWROFF) Power supplies (VBAT_BB, VBAT_RF) are connected Hibernate Floor current during PSM dormant PSM Lite Hibernate Hibernate Cycleb Lite Hibernate Cycleb Hibernate Cycleb Lite Hibernate Cycleb T3412 = 24h T3324 = 20s T3412 = 1h T3324 = 20s Typ Unit 2.8 A 2.8 30 9c 35c 180c 185c A A A A A A Rev. 5 October 2022 33 41114133 Product Technical Specification Table 3-6: HL7810 / LPM Current Consumption - Cat-M1a (Continued) Modem Radio State Lowest Power Mode Details Typ Unit CalibrationApplies to eDRX 81.92s and longer Hibernate Floor current during eDRX Lite Hibernate eDRXd Hibernate Cycleb Lite Hibernate Cycleb Hibernate Cycleb Lite Hibernate Cycleb Sleep Hibernate Sleep Hibernate Running DRX Standby eDRX cycle (TI-eDRX) = 81.92s PTW and DRX = 1.28s eDRX cycle (TI-eDRX) = 20.48s PTW and DRX = 1.28s 1.28s 2.56s DRX independent, +KSLEEP=2 or Wake active Module registered, Idle mode, without TX power/

data transfer 10 27 30 40e 45e 85e 90e 3 2 2.5 1.3 45 15 Ah A A A A A A mA mA mA mA mA mA a. Values measured under following conditions:

- Good channel conditions (SINR > 5 dB)

- Static scenario b. Cycle (Lite Hibernate or Hibernate) includes boot, cell acquisition, network attach, wait for timer expiry, and back to Sleep c. Values are T3324-dependent. d. See Extended DRX (eDRX) for details. e. Values are PTW and DRX-dependent. Table 3-7: HL7812 LPM Current Consumption - Cat-M1a Modem Radio State Lowest Power Mode Details Typ Unit OFF OFF Module is switched off by AT command and 1.8 VBATs are connected Power supplies (VBAT_BB, VBAT_RF) are connected Hibernate Floor current during PSM dormant PSM Lite Hibernate Hibernate Cycleb Lite Hibernate Cycleb Hibernate Cycleb Lite Hibernate Cycleb T3412 = 24h T3324 = 20s T3412 = 1h T3324 = 20s 1.8 30 9c 35c 175c 185c A A A A A A A Rev. 5 October 2022 34 41114133 Power Specifications Table 3-7: HL7812 LPM Current Consumption - Cat-M1a (Continued) Modem Radio State Lowest Power Mode Details Typ Unit TAUOcurrence is network dependent CalibrationApplies to eDRX 81.92s and longer Hibernate Floor current during eDRX Lite Hibernate Hibernate Cycleb Lite Hibernate Cycleb Hibernate Cycleb Lite Hibernate Cycleb eDRX cycle (TI-eDRX) = 81.92s PTW and DRX = 1.28s eDRX cycle (TI-eDRX) = 20.48s PTW and DRX = 1.28s Sleep Hibernate Sleep Hibernate Running 1.28s 2.56s DRX independent, +KSLEEP=2 or Wake active Module registered, Idle mode, without TX power/

data transfer 90 10 30 35 50e 55e 100e 110e 3 2 2.5 1.3 50 15 Ah Ah A A A A A A mA mA mA mA mA mA eDRXd DRX Standby a. Values measured under following conditions:

- Good channel conditions (SINR > 5 dB)

- Static scenario b. Cycle (Lite Hibernate or Hibernate) includes boot, cell acquisition, network attach, wait for timer expiry, and back to Sleep c. Values are T3324-dependent. d. See Extended DRX (eDRX) for details. e. Values are PTW and DRX-dependent. See Extended DRX (eDRX) for details. Table 3-8: HL7810 LPM Current Consumption - NB Modem Radio State Lowest Power Mode Details Typ Unit OFF OFF Module is switched off by AT command. Power supplies (VBAT_BB, VBAT_RF) are connected. Hibernate Floor current during PSM dormant PSM Lite Hibernate Hibernate Cyclea Lite Hibernate Cycleb Hibernate Cycleb Lite Hibernate Cycleb T3412 = 24h T3324 = 20s T3412 = 1h T3324 = 20s 2.8 2.8 30 12b 33c 95c 125c A A A A A A A Rev. 5 October 2022 35 41114133 Product Technical Specification Table 3-8: HL7810 LPM Current Consumption - NB (Continued) Modem Radio State Lowest Power Mode Details Typ Unit TAUOcurrence is network dependent CalibrationApplies to eDRX 81.92s and longer Hibernate Floor current during eDRX Lite Hibernate Hibernate Cycleb Lite Hibernate Cycleb Hibernate Cycleb Lite Hibernate Cycleb eDRX cycle (TI-eDRX) = 81.92s PTW and DRX = 2.56s eDRX cycle (TI-eDRX) = 20.48s PTW and DRX = 2.56s Sleep Hibernate Sleep Hibernate Sleep Hibernate Running 1.28s 2.56s 10.24s DRX independent, +KSLEEP=2 or Wake active Module registered, Idle mode, without TX power/

data transfer 25 20 28 32 52d 55e 120e 130e 4.5 3.8 3.5 2.3 2.5 1 45 15 Ah Ah A A A A A A mA mA mA mA mA mA mA mA eDRXc DRX Standby a. Cycle (Lite Hibernate or Hibernate) includes boot, cell acquisition, network attach, wait for timer expiry, and back to Sleep b. Values are T3324-dependent. c. See Extended DRX (eDRX) for details. d. Values are PTW and DRX-dependent. Table 3-9: HL7812 LPM Current Consumption - Cat-NBa Modem Radio State Lowest Power Mode Details Typ Unit OFF OFF Module is switched off by AT command and VBATs are connected Hibernate Floor current during PSM dormant PSM Lite Hibernate Hibernate Cycleb Lite Hibernate Cycleb Hibernate Cycleb Lite Hibernate Cycleb T3412 = 24h T3324 = 20s T3412 = 1h T3324 = 20s 1.8 1.8 30 12c 40c 235c 245c A A A A A A A Rev. 5 October 2022 36 41114133 Table 3-9: HL7812 LPM Current Consumption - Cat-NBa (Continued) Modem Radio State Lowest Power Mode Details Typ Unit Power Specifications TAUOcurrence is network dependent CalibrationApplies to eDRX 81.92s and longer Hibernate Floor current during eDRX Lite Hibernate Hibernate Cycleb Lite Hibernate Cycleb Hibernate Cycleb Lite Hibernate Cycleb eDRX cycle (TI-eDRX) = 81.92s PTW and DRX = 2.56s eDRX cycle (TI-eDRX) = 20.48s PTW and DRX = 2.56s Sleep Hibernate Sleep Hibernate Sleep Hibernate Running 1.28s 2.56s 10.24s DRX independent, +KSLEEP=2 or Wake active Module registered, Idle mode, without TX power/

data transfer 120 20 30 35 75e 80e 220e 230e 4.2 3.5 3.2 2 2.2 0.6 45 15 Ah Ah A A A A A A mA mA mA mA mA mA mA mA eDRXd DRX Standby a. Values measured under following conditions:

- Good channel conditions (SINR > 5 dB)

- Static scenario b. Cycle (Lite Hibernate or Hibernate) includes boot, cell acquisition, network attach, wait for timer expiry, and back to Sleep c. Values are T3324-dependent. d. See Extended DRX (eDRX) for details. e. Values are PTW and DRX-dependent. See Extended DRX (eDRX) for details. Table 3-10: HL7810 / Current Consumption - LTE Cat-M1 Connected Mode Parameter Band Output Power Avg. Current (Typical Values)a 1, 2, 3, 4, 5, 8, 12, 13, 18, 19, 20, 25, 26, 28, 66, 85 23 dBm 0 dBm 200-240 mA 120-190 mA LTE Cat-M1 Modem State: Connected 4RB DL at MCS 14 1RB_UL at MCS 15 Maximum 3 UL sub-frames and 3 DL sub-frames every 10 ms Transferring UDP payload data rates: concurrent 280 kbps DL + 45 kbps UL a. Ranges reflect variations between band/channel combinations Rev. 5 October 2022 37 41114133 Product Technical Specification Table 3-11: HL7812 Current Consumption LTE Cat-M1 Connected Mode Parameter Band Output Power Avg. Current (Typical Values)a 1, 2, 3, 4, 5, 8, 12, 13, 18, 19, 20, 25, 26, 28, 66, 85 23 dBm 0 dBm 170-230 mA 120-140 mA LTE Cat-M1 Modem State: Connected 4RB DL at MCS 14 1RB_UL at MCS 15 Maximum 3 UL sub-frames and 3 DL sub-frames every 10 ms Transferring UDP payload data rates: concurrent 280 kbps DL +

45 kbps UL a. Ranges reflect variations between band/channel combinations Table 3-12: HL7810 Current Consumption - LTE NB-1 Connected Mode Parameter Band Output Power Avg. Current (Typical Values) NB1 DL peak throughput (27.2kbps) UL Subcarrier spacing: 15KHz 1, 2, 3, 4, 5, 8, 12, 13, 18, 19, 20, 25, 26, 28, 66, 85 23 dBm 0 dBm 110-140 mA 90-125 mA Subcarriers downlink: 12 MCS.TBS:13 MCS.TBS:13 NB1 UL peak throughput (62.5kbps) UL Subcarrier spacing: 15KHz Subcarriers uplink:3 MCS.TBS:13 23 dBm 0 dBm 120-150 mA 100-130 mA Table 3-13: HL7810 Current Consumption - LTE NB-2 Connected Mode Parameter Band Output Power Avg. Current (Typical Values) NB2 DL peak throughput (134kbps) UL Subcarrier spacing: 15KHz 1, 2, 3, 4, 5, 8, 12, 13, 18, 19, 20, 25, 26, 28, 66, 85 23 dBm 0 dBm 150-220 mA 100-170 mA Subcarriers downlink: 12 MCS.TBS:13 MCS.TBS:13 NB2 UL peak throughput (109kbps) UL Subcarrier spacing: 15KHz Subcarriers uplink:3 MCS.TBS:13 23 dBm 0 dBm 300-360 mA 150-310 mA Rev. 5 October 2022 38 41114133 Power Specifications Table 3-14: HL7812 Current Consumption - LTE NB-1 Connected Mode Parameter Band Output Power Avg. Current (Typical Values)a,b NB1 DL peak throughput (27.2kbps) UL Subcarrier spacing: 15KHz 1, 2, 3, 4, 5, 8, 12, 13, 18, 19, 20, 25, 26, 28, 66, 85 23 dBm 0 dBm 100-110 mA 90-100 mA Subcarriers downlink: 12 MCS.TBS:13 NB1 UL peak throughput (45.7 kbps) UL Subcarrier spacing: 15KHz Subcarriers uplink: 12 MCS.TBS:13 a. Typical average current values for 1 time slot. b. Measured at 3.7V, 25C. 23 dBm 0 dBm 100-120 mA 80-90 mA Table 3-15: HL7812 Current Consumption - LTE NB-2 Connected Mode Parameter Band Output Power Avg. Current (Typical Values) NB2 DL peak throughput (134 kbps) UL Subcarrier spacing: 15KHz 1, 2, 3, 4, 5, 8, 12, 13, 18, 19, 20, 25, 26, 28, 66, 85 23 dBm 0 dBm 160-190 mA 120-130 mA Subcarriers downlink: 12 MCS.TBS:13 NB2 UL peak throughput (159 kbps) UL Subcarrier spacing: 15KHz Subcarriers uplink: 12 MCS.TBS:13 23 dBm 0 dBm 220-285 mA 150-170 mA Table 3-16: HL7812 Typical Current Consumption - 2G Connected Mode Parameter Band Output Power Avg. Current (Typical Values) PCL5 PCL19 PCL0 PCL15 850/900 MHz 32.5 dBm 5 dBm 1800/1900 MHz 29.5 dBm 0 dBm 290 mA 130 mA 220 mA 120 mA Rev. 5 October 2022 39 41114133 4: Detailed Interface Specifications 4 This chapter describes the interfaces supported by the Sierra Wireless HL781x and provides specific voltage, timing, and circuit recommendations for those interfaces, as appropriate 4.1 VGPIO The VGPIO (GPIO voltage output) 1.8 V supply state is:

ON (available) Voltage output is high when module is in Active, Sleep, or Lite Hibernate mode OFF (not available) Voltage output is low when module is in OFF, Reset, or Hibernate mode VGPIO can be used to:

Pull-up signals such as I/Os. For additional details, see I/O Behavior in Hibernate Mode. Supply LED drivers Indicate the module power state Control buffering of module I/O (required in Hibernate) Table 4-1 and Table 4-2 describe the VGPIO supply. Table 4-1: VGPIO Pin Description Pad # Signal Name I/Oa Description C45 VGPIO PO GPIO voltage supply a. Signal direction with respect to the module Refer to the following table for the electrical characteristics of the VGPIO supply. Table 4-2: VGPIO Electrical Characteristics Parameter Voltage level Min 1.75 Typ 1.8 Max 1.85 Unit Remarks V Applies to Active, Sleep, and Lite Hibernate modes Current capability Active, Sleep Lite Hibernate Output capacitance 25 mA 1 1 mA F Total current supplied by VGPIO should not exceed 25 mA. External decoupling capacitance should not exceed 1 F. Rev. 5 October 2022 40 41114133 Detailed Interface Specifications 4.1.1 I/O Behavior in Hibernate Mode The following behaviors apply, only in Hibernate mode, to I/Os that are referenced to VGPIO (i.e. UART, GPIO, Clock, UIM1, Indication, and ADC signal groups see Table 2-2); they do not apply in Lite Hibernate or Sleep modes. VGPIO is OFF (voltage output is low) Note: The host platform should isolate these signals during module Hibernate mode to prevent back-powering the module. For details, see HibernateIsolation Requirements. No I/O should be biased as no internal source exists. The maximum allowed voltage is 0.2V at any I/O. All I/Os that are referenced to VGPIO will be in an undefined state. The host should ignore all activity on these signals until the module has initialized and reached AT-READY state (i.e. when UART1_CTS transitions from high to low (and stays low) and VGPIO is high). For timing details, see Unmanaged POWER_ON_N (Default) and Wakeup from Low Power Modes. 4.2 USIM Interface The HL781x implements a USIM interface that can be used to control either:

the modules eSIM (internal, embedded SIMoptional and SKU-dependent) or an external 1.8V USIM (UIM1); 3V USIM is not supported To associate USIM1 with the eSIM or external USIM, use the AT+KSIMSEL command. For details, refer to HL78xx AT Commands Interface Guide (Doc# 41111821). 4.2.1 eSIM Interface eSIM is an internal interface supporting Sierra Smart Connectivity. For details about using the HL781xs eSIM with Sierra Smart Connectivity, refer to [6] Sierra Wireless Ready-to-

Connect Module Integration Guide (Doc# 41113385). For additional information on Sierra Smart Connectivity, explore www.sierrawireless.com or contact Sierra Wireless. 4.2.2 External UIM1 Interface The USIM1 interface is fully compliant with GSM 11.11 recommendations concerning USIM functions. Table 4-3 describes the USIM1 interface. Rev. 5 October 2022 41 41114133 Product Technical Specification Table 4-3: UIM1 Pin Description Pad #

Signal Name C26 C27 C28 C29 C64 UIM1_VCC UIM1_CLK UIM1_DATA UIM1_RESET UIM1_DETb I/Oa PO O I/O O I Description I/O Type USIM1 Power supply 1.8V (VGPIO) USIM1 Clock 1.8V (VGPIO) USIM1 Data 1.8V (VGPIO) USIM1 Reset 1.8V (VGPIO) USIM1 Detection 1.8V (VGPIO) a. Signal direction with respect to the module b. Buffer is required if UIM_DET1 is powered from host; not required if powered from VGPIO. UIM1_DET can be used as GPIO3 if external SIM is not required. Note: UIM1_VCC max output current is 50 mA in Active and Sleep modes, 1 mA in Lite Hibernate, and Off in Hibernate. For UIM1 electrical interface details, see UIM1. 4.2.3 UIM1_DET UIM1_DET is used to detect the insertion or removal of a USIM in the USIM socket connected to the main USIM interface (UIM1). When a USIM is:

Inserted UIM1_DET is HIGH. Removed UIM1_DET is LOW. Note: In Hibernate mode, UIM1_DET is in an undefined state. To enable or disable the USIM detect feature, use the AT+KSIMDET command. For details, refer to HL78xx AT Commands Interface Guide. 4.3 USB Interface The HL781x provides a full speed USB 2.0 interface that conforms to the Universal Serial Bus Specification, Revision 2.0. Table 4-4 and Table 4-5 describe the USB interface. Table 4-4: USB Pin Description Pad #

C12 C13 C16 Signal Name USB_D-

USB_D+

USB_VBUS I/Oa I/O I/O PI a. Signal direction with respect to the module Description USB Data Negative USB Data Positive USB VBUS Rev. 5 October 2022 42 41114133 Detailed Interface Specifications Table 4-5: USB Electrical Characteristics Parameter Voltage at pins USB_D+ / USB_D-

USB_VBUS Min 3.15 4.75 Typ 3.3 5.0 Max 3.45 5.25 Unit V V Important: For USB operation, USB_VBUS is a mandatory connection. The host must ensure USB_VBUS is provided before establishing USB communication. When USB operation is enabled, the lowest power mode supported is Activethe module cannot enter Low Power state. When USB operation is disabled, the lowest power mode supported is Hibernate. For USB enumeration timing, refer to Unmanaged POWER_ON_N (Default) and Wakeup from OFF Mode. Simultaneous UART and USB is supported by default, but can be affected by the

+KUSBCOMP command. For details, refer to HL78xx AT Commands Interface Guide. 4.4 General Purpose Input/Output (GPIO) The HL781x provides several GPIOs, some of which are multiplexed with other signals, as described in Table 4-6. For electrical specifications, see Table 3-3. Table 4-6: GPIO Pin Descriptions Pad #

Signal Name Alternate Function Default Statea I/O Type C1 C10 C40 C41 C46 C51 C52 C53 C54 C64 C65 C66 GPIO1 GPIO2 GPIO7 GPIO8 GPIO6 GPIO14 GPIO10 GPIO11 GPIO15 GPIO3 GPIO4 GPIO5

Input Pull-down 1.8V (VGPIO) Alternative default Ring Indicator (Active High Output) Input Pull-down 1.8V (VGPIO)

Input Pull-down 1.8V (VGPIO) VBAT_PA_EN (Output) Input Pull-down 1.8V (VGPIO)

Input Pull-down 1.8V (VGPIO) UART3_CTS (Output) Input Pull-down 1.8V (VGPIO) UART3_TX (Input) Input Pull-down 1.8V (VGPIO) UART3_RTS (Input) Input Pull-down 1.8V (VGPIO) UART3_RX (Output) Input Pull-down 1.8V (VGPIO) UIM1_DET (Input) Input Pull-down 1.8V (VGPIO)

Input Pull-down 1.8V (VGPIO) Input Pull-down 1.8V (VGPIO) Rev. 5 October 2022 43 41114133 Product Technical Specification a. Default state is software-controlled when module has initialized and reached AT-READY state. Default state is configurable by customer using AT+KGIOCFG command. For details, refer to HL78xx AT Commands Interface Guide (Doc# 41111821). Table 4-6 notes the default state for each signal. By default, at power up, all GPIOs are configured as inputs. During power up, power down, reset and Hibernate, the signals are in an undefined state. Therefore, the host should ignore all activity on I/Os until the module has reached AT-READY state (i.e. when UART1_CTS transitions from high to low (and stays low) and VGPIO is high). For timing details, see Unmanaged POWER_ON_N (Default) and Wake Up Signal (WAKEUP). 4.5 Main Serial Link (UART1) The HL781x implements the UART1 serial interface (up to 921.6 kbps, default rate of 115.2 kbps) for communication between the module and a PC or host processor. UART1 consists of a flexible, 8-wire asynchronous serial, 1.8V interface that complies with RS-

232 interface. UART1 can also be used to upgrade the module firmware locally. Simultaneous UART and USB is supported by default, but can be affected by the

+KUSBCOMP command. For details, refer to HL78xx AT Commands Interface Guide. Note: The host platform may use UART1 as an 8-wire, 4-wire, or 2-wire interface as shown in Figure 4-1, Figure 4-2, and Figure 4-3. Note that in Hibernate mode the host platform (MCU) interfaces can remain powered it is important that the host interfaces do not back-power the module. The UART1 interface is not active during Hibernate mode, so the host should ignore all activity on UART1 during Hibernate. If the module will enter Hibernate mode, Sierra Wireless recommends adding buffer circuits to ensure UART signals are not driven high

(i.e. >0.2V). Note that a buffer is not required in Lite Hibernate mode. For detailed information, refer to I/O Behavior in Hibernate Mode. Table 4-7 describes the UART1 interface. Rev. 5 October 2022 44 41114133 Detailed Interface Specifications Table 4-7: UART1 Pin Description Pad #

Signal Namea Default Stateb,c Active I/O Type Description C2 C3 C4 C5 C6 C7 C8 C9 UART1_RI Output UART1_RTS Input with pull-down UART1_CTS Output UART1_TX Input with pull-down UART1_RX Output UART1_DTR Input with pull-up UART1_DCD Output UART1_DSR Output L L L

L L L 1.8V (VGPIO) Ring Indicator Data reception, SMS, etc. 1.8V (VGPIO) Request To Send 1.8V (VGPIO) Clear To Sendd The module is ready to receive AT commands. 1.8V (VGPIO) Transmit data 1.8V (VGPIO) Receive data 1.8V (VGPIO) Data Terminal Readye 1.8V (VGPIO) Data Carrier Detect Signal data connection in progress 1.8V (VGPIO) Data Set Ready Signal UART interface is ON a. Signals are named with respect to the host device (i.e. DTE (Data Terminal Equipment) conventionPC view). For example, UART1_RX is the signal used by the host to receive data from the module. b. Signal direction with respect to the module. For example, UART1_RX is an output from the module to the host. c. Default state is software-controlled when module has initialized and reached AT-READY state. d. Host can monitor UART1_CTS and VGPIO to determine when the module is ready to receive AT commands (AT-READY). The UART1 inter- face is not active during Hibernate mode, so the host should ignore all activity on UART1_CTS during Hibernate. e. UART1_DTR has software-controlled pull-up (PU) (if enabled by using AT+KSLEEP with the <mngt> parameter set to 0), which is active only when module has initialized and reached AT-READY state. When the signal is low, the module wakes in all operational modes except Hibernate. When the signal is high, the module can enter sleep mode or lite hibernate mode but not hibernate mode. Note: If possible, it is highly recommended to add 0 on every line on the host platform to help the debug process. This will force the UART signal layout to the top PCB layer and allow access to the signal on the resistors. Rev. 5 October 2022 45 41114133 Product Technical Specification 4.5.1 Ring Indicator (UART1_RI or Alternative) UART1_RI is an active-low output signal that indicates incoming events (e.g. SMS, data reception, etc.). The signal is available in all power modes except Hibernate mode. In Hibernate mode, the UART_RI signal is in an undefined state. Therefore, if a customer platform requires a RI signal to wake its host processor on SMS or IP reception, an alternative signal must be used. The AT+KRIC command can configure GPIO2 (by default) as an inverted RI signal

(RI_inverse_gpio). (For details, refer to HL78xx AT Commands Interface Guide (Doc#

41111821) and HL78xx Low Power Modes Application Note (Doc# 2174229)). Note: Because GPIO2 is in an undefined state while in (and exiting) Hibernate, use the following recommendations when GPIO2 is used as an RI signal: If firmware is used, enable the internal PD on GPIO2 using AT+KRIC (default state is No Pull). 4.5.2 UART1_RTS/UART1_CTS UART1_RTS (Request to Send) is an active-low input signal used for module flow control

(in combination with UART1_CTS). By default, the UART1_RTS signal state is software-controlled as pull-down, and the host platform must drive this signal. The signal can be configured as a pull-up using the AT+KHWIOCFG command (minimum firmware version 4.6.8) for details, refer to HL78xx AT Commands Interface Guide (Doc# 41111821) For detailed UART1 flow control information (including use of UART1_RTS and UART1_CTS), refer to HL78xx Low Power Modes Application Note (Doc# 2174229)). 4.5.3 UART Application Examples HL781x UART1_RX UART1_CTS UART1_DSR UART1_DCD UART1_RI UART1_DTR UART1_TX UART1_RTS Buffer circuit TP TP TP TP TP TP TP TP Note: R is a 0 resistor (default value) Figure 4-1: 8-wire UART Application Example Customer Platform RXD CTS DSR DCD RI DTR TXD RTS R R R R R R R R Rev. 5 October 2022 46 41114133 Detailed Interface Specifications Customer Platform Customer Platform RXD CTS TXD RTS RXD TXD R R R R R R HL781x UART1_RX UART1_CTS UART1_TX UART1_RTS Buffer circuit TP TP TP TP Note: R is a 0 resistor (default value) Figure 4-2: 4-wire UART Application Example HL781x UART1_RX UART1_TX Buffer circuit TP TP Note: R is a 0 resistor (default value) Figure 4-3: 2-wire UART Application Example Note: All UART signals operate at 1.8V. A voltage level shifter is required when connecting to a 3V3 domain. 4.6 Power On Signal (POWER_ON_N) The POWER_ON_N hardware control signal can be used by the host platform to turn the module on. The signal is internally biased high by default. Bias voltage is dependent on the module mode 1.31.4V in Active or Sleep mode, and 1.11.2V in Hibernate or Lite Hibernate mode. The module has two possible operational modes Host-managed and unmanaged:

Unmanaged (default configuration) The module starts regardless of the POWER_ON_N state. In this mode, the POWER_ON_N signal must be left open. Note: If RESET_IN_N is low, the module will not start until RESET_IN_N is released. Host-Managed A low-level pulse must be provided by the host to switch the module ON. Use an open drain/open collector type circuit to drive the signal low (< 0.3V (Input Voltage-Low (V))). Table 4-8 and Table 4-9 describe the POWER_ON_N signal. Rev. 5 October 2022 47 41114133 Product Technical Specification Table 4-8: POWER_ON_N Pin Description Pad #

Signal Name C59 POWER_ON_Nb I/Oa I Description Powers the module ON a. Signal direction with respect to the module b. Signal provided by host. Does not need to be buffered, and can be directly connected to module using an open drain/collector type circuit. Table 4-9: POWER_ON_N Electrical Characteristics Parameter Input Voltage-Low (v) Min Typ Max 0.3 Unit V To ensure safe power on, the module VBAT (VBAT_BB/VBAT_RF) must be discharged below 0.3V before re-applying VBAT power. 4.6.1 Unmanaged POWER_ON_N (Default) COLDSTART HARDWARERESET

(RESET_IN_N) SOFTWARERESET

(AT+CFUN=1,1) VBAT_RF VBAT_BB T1 RESET_IN_N VGPIO T2 I/OState XXXXXXXXXXXXXXXXXXXXXXX UART1_CTS T3 T4 USBBus XXXXXXXXXXXXXXXXXXXXXXX T8 HWRESET AT+CFUN=1,1 T5 T6 T2 XXXXXXXXXXXX XXXXXXXXX T3 T4 XXXXXXXXXXXX T8 XXXXXXXXX T7 State:

OFF ON ATREADY OFF ON ATREADY S/WReset ATREADY Figure 4-4: Power On and Reset Sequence (unmanaged POWER_ON_N) Important: At completion of T4/T8/T7, the module is ready to receive AT commands ("AT-

READY") via UART1 or USB. Rev. 5 October 2022 48 41114133 Detailed Interface Specifications Table 4-10: POWER_ON_N Timing (unmanaged)a Parameter Min Typ Maxb Unit T1: Delay between VBAT_BB and RESET_IN_N T2: Delay between RESET_IN_N and VGPIO T3: Delay between VGPIO and UART1_CTS T4: Delay T5: HW RESET_IN_N assertion time T6: Off delay between VGPIO and RESET_IN_N T7: Delay between software reset and AT-READY (UART/USB) T8: Delay between VGPIO and USB enumeration 100 200 60 100 10 30 10 T3max + T4max ms ms s s s s s s a. Timing of first power cycle after FOTA/FW upgrade is not captured in this table. b. Measurements taken with HL78xx Development Kit 4.7 Power Down, Off, and VBAT Removal 4.7.1 Software Power Off in Unmanaged Mode To power down the module via software:

1. Initiate the power down process:

a. Use the +CPWROFF command (For details, refer to HL78xx AT Commands Interface Guide (Doc# 41111821).):

AT+CPWROFF OK b. Immediately after receiving the "OK" response, set WAKEUP low. 2. Monitor VGPIO When VGPIO is low (e.g. < 0.2 V), the module is in OFF mode.

(Note The module can be woken from OFF mode by setting WAKEUP high. For timing details, see Wake Up Signal (WAKEUP) 3. It is now safe to remove power (VBAT_BB and VBAT_RF) from the module. Note: While the module is in OFF mode, the host platform (MCU) interfaces can remain powered. To prevent these signals from back-powering the module, the host platform should make sure to isolate themthe signals should not be driven high (i.e. > 0.2 V). If the module is back-powered, the VGPIO low value will be higher (e.g. 0.8~1.1 V). Rev. 5 October 2022 49 41114133 Product Technical Specification 4.7.2 Emergency Power Removal The Software Power Off in Unmanaged Mode procedure (which uses AT commands) should be used to safely power down the module. However, if the modules UART and USB interfaces cannot be accessed, or are unresponsive (i.e. do not respond after an AT command is issued (see Command Timeout appendix in HL78xx AT Commands Interface Guide), the following procedure can be used to power down the module, if necessary. Important: This procedure should be used with caution. If the module is interrupted while processing certain AT commands or performing a firmware upgrade, or the procedure is not followed correctly, the module may become unusable. 4. Set RESET_IN_N low, and keep it asserted. 5. Monitor VGPIO- When VGPIO is low (e.g. < 0.2 V), the module is powered down. 6. Remove VBAT (both VBAT_BB and VBAT_RF) power. 7. Monitor VBAT- When VBAT is discharged below 0.3V, de-assert RESET_IN_N. Note: :To power up the module, it is critical that VBAT be fully discharged (or below 0.3V) and that RESET_IN_N must be de-asserted. For details, refer to Unmanaged POWER_ON_N (Default). While the module is in OFF mode, the host platform (MCU) interfaces can remain powered. To prevent these signals from back-powering the module, the host platform should make sure to isolate them-the signals should not be driven high (i.e. > 0.2 V). If the module is back-powered, the VGPIO low value will be higher (e.g. 0.8~1.1 V). 4.8 Reset Signal (RESET_IN_N) The RESET_IN_N hardware control signal can be used to reset the module in any power state. To reset the module, assert RESET_IN_N low for 100 s (minimum)- this action immediately resets the module. For timing details, see Figure 4-4 (HARDWARE RESET segment). Use an open drain/open collector type circuit to drive the signal low (< 0.3V (Input Voltage-Low (V))), Do not add a pull-up resistor on this signal as it is internally biased high by default. The bias voltage depends on the module operating state- 1.3-1.4V in Active and Sleep modes, and 1.1-1.2V in Hibernate and Lite Hibernate modes. Note: For power-sensitive applications, the module does not reach minimal power consumption when held in reset. Therefore, it is not recommended to hold the module in reset state for long periods. Rev. 5 October 2022 50 41114133 Detailed Interface Specifications Warning: RESET_IN_N should only be used to reset the module if it is unresponsive to AT commands and a power cycle cannot be performed. If used inappropriately (e.g. to reset during a firmware upgrade), memory corruption can occur. As an alternative, Sierra Wireless recommends implementing a software reset using AT+CFUN=1,1. For details, refer to HL78xx AT Commands Interface Guide (Doc# 41111821) Warning: During a module reset:

- All I/Os will be in an undefined state.

- I/Os must not be driven high (over 0.2 V), otherwise the module may be damaged

- RESET_IN_N must not be set low during a power cycle, otherwise the module will not boot.

- VBAT_BB must always be ? 3.2V when reset is asserted. Table 4-11 and Table 4-12 describe the RESET_IN_N signal. Table 4-11: RESET_IN_N Pin Description Pad #

C11 Signal Name RESET_IN_Nb I/Oa I Active Description L Reset signal a. Signal direction with respect to the module. b. Signal provided by host. Does not need to be buffered, and can be directly connected to module using an open drain/collector type circuit. Refer to the following table for the electrical characteristics of the RESET_IN_N interface. Table 4-12: RESET_IN_N Electrical Characteristics Parameter Input Voltage-Low Reset assertion time Min 0.1 Typ 1 Max 0.3 Unit V ms 4.9 Analog to Digital Converter (ADC) The HL781x provides two general purpose ADC signals (ADC0, ADC1). These converters are 12-bit resolution ADCs with voltage range of 01.8V. Typical ADC use is for monitoring external signals. The AT+KADC command is used to read the ADC values. For details, refer to HL78xx AT Commands Interface Guide. Table 4-13 describes the ADC signals. Table 4-13: ADC Pin Description Pad #

Signal Name C24 C25 ADC1 ADC0 a. Signal direction with respect to the module. I/Oa AI AI Description I/O Type Analog to digital converter 1.8V (VGPIO) Analog to digital converter 1.8V (VGPIO) Rev. 5 October 2022 51 41114133 Product Technical Specification 4.10 Clock Interface The HL781x supports two digital clock output signals. These signals are disabled by default. To enable (or disable) these signals, use the AT+KHWIOCFG command. For details, refer to HL78xx AT Commands Interface Guide. Note: To reduce noise and radiated spurious emission (RSE), disable the clock signals if they are not being used. Table 4-14 describes the clock signals. Table 4-14: Clock Interface Pin Description Pad #

Signal Name C22 C23 26M_CLKOUT 32K_CLKOUT I/Oa O O a. Signal direction with respect to the module. Voltage Supply Domain Description 1.8V (VGPIO) 1.8V (VGPIO) 26 MHz Digital Clock output 32.786 kHz Digital Clock output 4.11 Debug Interfaces The HL781x provides two 4-wire debug port interfaces (Diagnostic Interface, Modem Logs) that can be used with the AT interface for full debug capability. Note: All UART signals operate at 1.8V. A voltage level shifter is required when connecting to a 3V3 domain. UART interfaces are not active during Hibernate mode, so the host should ignore all activity on UART interfaces during Hibernate. If the module will enter Hibernate mode, Sierra Wireless recommends adding buffer circuits to ensure module I/Os are not driven high (i.e. >0.2V). To enable debug interfaces, refer to HL78xx AT Commands Interface Guide. 4.11.1 Diagnostic Interface The Diagnostic interface is implemented over UART0. When the module begins to boot, UART0 is enabled at 115200 baud and writes an initial boot log. Availability and behavior of UART0 after the initial boot log is written depends on the configured debug mode (using the AT command +SWITRACEMODE):

Customer mode (AT+SWITRACEMODE=CUSTOMER) UART0 is disabled after the initial boot log is written. Debug mode (AT+SWITRACEMODE=LOG or AT+SWITRACEMODE=SFPLOG) UART0 remains enabled for logging. Unless configured differently using +SWITRAC-

EMODE options, the default baud rate (921600) and default flow control (enabled) are used. With flow control enabled (4-wire logging), UART0_CTS is asserted. To receive logging data, the host must assert UART0_RTS, and then use UART0_RX/

Rev. 5 October 2022 52 41114133 Detailed Interface Specifications UART0_TX to receive/send data. With flow control disabled (2-wire logging), note that the host must be fast enough to capture all data streamed from the module so that log files are not corrupted. Boot mode for firmware upgrades (using SFT (Standalone File Tool)) UART0 remains enabled for 2-wire communication (flow control is disabled by default;

UART0_CTS is not asserted, and UART0_RTS is ignored). Note that Flow control may be enabled using AT+KBOOTCFG=1, but is not required for successful fw upgrades. For SFT details, refer to HL780x Firmware Update Methods Application Note. Table 4-15: Diagnostic Interface Pin Description Pad # Signal Namea Default Stateb,c Active I/O Type Description C55 C56 C57 C58 UART0_RX Output UART0_TX Input UART0_CTS Output UART0_RTS Input L L 1.8V (VGPIO) Debug Receive Data 1.8V (VGPIO) Debug Transmit Data 1.8V (VGPIO) Debug Clear to Send 1.8V (VGPIO) Debug Request to Send a. Signals are named with respect to the host device (i.e. DTE (Data Terminal Equipment) conventionPC view). For example, UART0_RX is the signal used by the host to receive data from the module. b. Signal direction with respect to the module. For example, UART0_RX is an output from the module to the host. c. Default states are for the module in Debug mode with flow control enabled. In Debug and Boot modes, with flow control disabled, UART0_CTS and UART0_RTS are disabled. In Customer mode, all signals are disabled. Note: It is highly recommended to provide access through Test Points to this interface (required for customer platform debugging). HL781x UART0 DiagnosticInterface Customer Platform C55 C56 C57 C58 UART0_RX UART0_TX UART0_CTS UART0_RTS Buffer circuit TP TP TP TP 0 0 0 0 Figure 4-5: Diagnostic Interface connection example Rev. 5 October 2022 53 41114133 Product Technical Specification 4.11.2 Modem Logs Interface (MLI) Table 4-16: Modem Logs Interface Pin Description Pad #

Signal Name I/Oa I/O Type Description C51 C52 C53 C54 GPIO14 GPIO10 GPIO11 GPIO15 O I I O 1.8V (VGPIO) 1.8V (VGPIO) UART3_CTSb UART3_TXb 1.8V (VGPIO) UART3_RTSb 1.8V (VGPIO) UART3_RXb a. Signal direction with respect to the module. For example, GPIO14 is an output from the module to the host. b. Signals are named with respect to the host device (i.e. DTE (Data Terminal Equipment) conventionPC view). For example, UART3_RX is the signal used by the host to receive data from the module. Note: To enable use of the UART3 interface for customer platform debugging, it is highly recom-

mended to provide access through Test Points to these 4 GPIOs. HL781x UART3 ModemLogsInterface(MLI) Customer Platform GPIO15/UART3_RX GPIO10/UART3_TX GPIO14/UART3_CTS GPIO11/UART3_RTS C54 C52 C51 C53 Buffer circuit TP TP TP TP 0 0 0 0 Figure 4-6: Modem Logs Interface connection example Rev. 5 October 2022 54 41114133 Detailed Interface Specifications 4.12 Wake Up Signal (WAKEUP) The WAKEUP hardware control signal is used to wake the module from low power modes

(Sleep, Lite Hibernate, Hibernate, OFF) by driving the signal high to 1.8V. The module will not enter or return to low power mode while the WAKEUP signal is high. Table 4-17 and Table 4-18 describe the WAKEUP signal. Table 4-17: WAKEUP Pin Description Pad #

C44 Signal Name WAKEUPb I/Oa I I/O Type Description 1.8V Wakes the module up from low power mode a. Signal direction with respect to the module. b. Signal provided by host. Signal does not need to be buffered, and can be directly connected to the module. Table 4-18: WAKEUP Electrical Characteristics Parameter Minimum Typical Maximum Unit VIL VIH Wakeup assertion timea Internal PD 1.2 100 100K 0.3 V V s W a. Assertion timeTime required to keep WAKEUP at high level to ensure module can wake up successfully. Rev. 5 October 2022 55 41114133 Product Technical Specification 4.12.1 Wakeup from Low Power Modes This section describes the modules signal behaviors when waking from the low power modes defined in Table 3-5. 4.12.2 Wakeup from OFF Mode Figure 4-7 and Table 4-19 describe signal behavior when WAKEUP is used to wake the module from OFF mode. WakeupfromOFF mode VBAT_RF VBAT_BB WAKEUP VGPIO I/OState UART1_CTS USBBUS T1 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX T2 T3 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX T4 State:

OFF ON ATREADY Figure 4-7: Wake up from OFF Mode Table 4-19: WAKEUP Timing (from OFF Mode) Parameter Min Typ Maxa T1: Delay between WAKEUP and VGPIO T2: Delay between VGPIO and UART1_CTS T3: Delay T4: Delay between VGPIO and USB enumeration a. Measurements taken with HL78xx Development Kit 2 100 4 T2max + T3max Unit ms s s s Rev. 5 October 2022 56 41114133 Detailed Interface Specifications 4.12.3 Wakeup from Lite Hibernate Mode Figure 4-8 and Table 4-20describe the modules signal behaviors when WAKEUP is used to wake the module from Lite Hibernate mode. LiteHibernate WakeupfromLite Hibernate VBAT_RF VBAT_BB WAKEUP VGPIO UART1_CTS T1 ATREADY Figure 4-8: Wake up from Lite Hibernate Mode Table 4-20: WAKEUP Timing (from Lite Hibernate Mode) Parameter T1: Delay between WAKEUP and AT-READY a. Measurements taken with HL78xx Development Kit Min Typ 1 Maxa 80 Unit ms Rev. 5 October 2022 57 41114133 Product Technical Specification 4.12.4 Wakeup from Hibernate Mode Figure 4-9 and Table 4-21 describe the modules signal behaviors when WAKEUP is used to wake the module from Hibernate mode. Hibernate Wakeupfrom Hibernate VBAT_RF VBAT_BB WAKEUP VGPIO I/OState T1 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX UART1_CTS Figure 4-9: Wake up from Hibernate Mode T2 T3 ON AT READY Table 4-21: WAKEUP Timing (from Hibernate Mode) Parameter Min Typ Maxa Unit T1: Delay between WAKEUP and VGPIO T2: Delay between VGPIO and UART1_CTS high T3: UART1_CTS high to AT-READY 1 50 80 ms s ms a. Measurements taken with HL78xx Development Kit Rev. 5 October 2022 58 41114133 Detailed Interface Specifications 4.13 RF Interface The RF interface of the Sierra Wireless HL781x provides a single RF antenna connection for the transmission/reception of RF signals. Contact Sierra Wireless technical support for assistance in integrating the Sierra Wireless HL781x on applications with embedded antennas. 4.13.1 RF Antenna Connection A 50 RF track (with maximum VSWR 1.1:1, and 0.5 dB loss) is recommended to connect the modules RF_MAIN to standard RF antenna connectors (e.g. SMA, U.FL, etc). Table 4-22 describes the modules RF interface. Table 4-22: RF Main Pin Description Pad #

RF Signal Impedance VSWR Rx (max) VSWR Tx (max) C48 C49 C50 GND RF_MAIN GND 50 2.5:1 2.5:1 4.13.2 LTE RF Interface 4.13.2.1 Maximum Output Power The HL781x modules LTE maximum transmitter output power for all bands in normal operation conditions (25C) is specified in Table 4-23. Table 4-23: HL7810 / / HL7812 Conducted Tx Max Output Power Tolerances - LTEa LTE Bands All bands Min Typ Max Units Notes 21.5b 23 24.5 dBm Power class 3 a. Under normal operating conditions (25C) b. Additional power reduction is applied to the lowest and highest supported channels for each band see Table 1-1 footnote "a"

for supported Tx channel ranges. (e.g. applies to B2 channels 18602 and 19198) 4.13.2.2 Rx Sensitivity The module's LTE receiver sensitivity is specified in the following tables. Rev. 5 October 2022 59 41114133 Product Technical Specification Table 4-24: HL781x Typical Conducted Cat-M1 RX Sensitivitya LTE Band Typical Reference Sensitivity Level @ 95% of Maximum Throughput

@ +25C (dBm)

@ Class A (dBm) 3GPP Limit (dBm)b B1 B2 B3 B4 B5 B8 B12 B13 B18 B19 B20 B25 B26 B28 B66 B85

-104

-104

-105

-104

-105

-105

-105

-105

-105

-105

-105

-105

-105

-105

-104

-105

-102.5

-103

-103.5

-102.5

-104

-103

-103.5

-104

-104

-104

-104

-103

-104.5

-104

-102.5

-104

-102.3

-100.3

-99.3

-102.3

-100.8

-99.8

-99.3

-99.3

-100.3

-102.3

-99.8

-100.3

-100.3c

-100.8

-102.3c

-102.3 a. Test conditions per 3GPP TS 36.521-1 v13: Bandwidth: 5MHz on Reference Measurement Channel. b. Displayed limits derived from 3GPP TS 36.521-1 V16.3.0, Table 7.3EA-2, adjusted by +0.7 dB for measurement uncertainty. c. Band not defined by 3GPP therefore no associated limit. Table 4-25: HL781x Typical Conducted NB1/NB2 RX Sensitivitya LTE Band Typical Reference Sensitivity Level @ 95% of Maximum Throughput

@ +25C (dBm)

@ Class A (dBm) 3GPP Limit (dBm)b B1 B2 B3 B4 B5 B8

-113

-113.5

-114

-113

-113.5

-113

-111.5

-112.1

-112.5

-111.6

-112.3

-111.8

-107.5

-107.5

-107.5

-107.5

-107.5

-107.5 Rev. 5 October 2022 60 41114133 Detailed Interface Specifications Table 4-25: HL781x Typical Conducted NB1/NB2 RX Sensitivitya (Continued) LTE Band Typical Reference Sensitivity Level @ 95% of Maximum Throughput

@ +25C (dBm)

@ Class A (dBm) 3GPP Limit (dBm)b B12 B13 B18 B19 B20 B25 B26 B28 B66 B85

-112.5

-113

-113.5

-113.5

-113

-113

-113.8

-113

-113

-113.5

-111.2

-111.8

-112.2

-112.2

-111.7

-111.7

-112.5

-111.7

-111.5

-112.5

-107.5

-107.5

-107.5

-107.5

-107.5

-107.5

-107.5

-107.5

-107.5

-107.5

-107.5

-107.5 a. Test conditions per 3GPP TS 36.521-1 v13: on DL Reference Measurement Channel defined b. Displayed limits derived from 3GPP TS 36.521-1 V16.3.0, Table 7.3F.1.3-1, adjusted by +0.7 dB for measurement uncertainty 4.13.3 2G RF Interface (HL7812 only) The HL7812 module is a GPRS only device (no EGPRS support) supporting GSM multislot class 10 (4 DL/2UL max (5 slots)). 4.13.3.1 Tx Output Power The module's 2G maximum transmitter output power is specified in Table 4-26. Table 4-26: HL7812 Conducted Tx Max Output Power Tolerances - 2Ga,b RF Band GSM 850 E-GSM 900 DCS 1800 PCS 1900 Min 31.5 31.5 28.5 28.5 Typ 32.5 32.5 29.5 29.5 Max 33.5 33.5 30.5 30.5 Units Notes dBm dBm dBm dBm GMSK mode (Class 4; 2 W, 33 dBm) GMSK mode (Class 4; 2 W, 33 dBm) GMSK mode (Class 1; 1 W, 30 dBm) GMSK mode (Class 1; 1 W, 30 dBm) a. Stated power tolerances satisfy 3GPP TS 51.010-1 requirements for normal (25C) and Class A (extreme) conditions. b. Stated power tolerances for input voltage of 3.7V. Rev. 5 October 2022 61 41114133 Product Technical Specification 4.13.3.2 Rx Sensitivity The module's GPRS receiver sensitivity is specified in Table 4-27. Table 4-27: Typical Conducted RX Sensitivity - GPRS Bandsa GPRS Band Parameters Typical Reference Sensitivity Level @ 95% of Maximum Throughput

@ +25C (dBm)

@ Class A (dBm) Standard Limit (dBm) GSM 850 10% BLER; GMSK CS1 -110 E-GSM 900 10% BLER; GMSK CS1 -110 DCS 1800 10% BLER; GMSK CS1 -112 PCS 1900 10% BLER; GMSK CS1 -112

-108

-108

-110

-110

-102

-102

-102

-102 a. Stated sensitivity values satisfy 3GPP TS 51.010-1 requirements for normal (25C) and Class A (extreme) conditions 4.14 TX Burst Indicator (TX_ON) The HL781x provides the TX_ON signal for TX activity indication. Note: This signal is currently available for LTE Cat-M1. Support for LTE Cat-NB1 (HL7810 /HL7812) and 2G (HL7812) will be available in a future firmware release. Table 4-28: TX_ON Pin Description Pad #

C60 Signal Name TX_ON I/Oa O a. Signal direction with respect to the module TX_ON I/O Type Description 1.8V (VGPIO) High during Tx activity TX activity Transmitting T advance Figure 4-10: TX_ON State High during TX Activity Rev. 5 October 2022 62 41114133 Detailed Interface Specifications To enable/disable this feature, use the AT+KHWIOCFG command. For details, refer to HL78xx AT Commands Interface Guide. Table 4-29: TX_ON Characteristics Parameter Tadvance Typical 30 s 4.15 Tx/Rx Activity Indicator; External RF Voltage Control The HL781x provides the VBAT_PA_EN signal for RF activity (Tx/Rx) indication. Depending on customer requirements, it can be also be used to select the module VBAT_RF power source during RF activity, and support antenna switching. To enable/disable this feature, use the AT+KHWIOCFG command. For details, refer to HL78xx AT Commands Interface Guide. Table 4-30, Figure 4-11 and Table 4-31 describe the VBAT_PA_EN signal. Table 4-30: VBAT_PA_EN Pin Description Pad #

Signal Name C41 GPIO8 VBAT_PA_EN I/Oa I/O O a. Signal direction with respect to the module I/O Type Description 1.8V (VGPIO) High during Tx/Rx activity GPIO8 /

VBAT_PA_EN Tx & Rx activity Tx / Rx activity Tx / Rx activity T advance T delay Figure 4-11: VBAT_PA_EN State during Tx/Rx Activity Rev. 5 October 2022 63 41114133 Product Technical Specification Table 4-31: VBAT_PA_EN Characteristics (TBC) Parameter Tadvance Tdelay Min 0.4 ms 10 s Max 5 ms 20 s 4.16 GNSS The HL781x's GNSS implementation supports GPS L1 and GLONASS G1 operation. Note: The GNSS receiver and LTE/GSM receiver share the same RF resources, therefore GNSS can only be used when the module is not actively connected on LTE/GSM. An example of a suitable implementation of GNSS in an end product would be the use of GNSS positioning for asset management applications where infrequent and no real-time position updates are required. Table 4-32 describes the GNSS antenna specifications. Note that the HL781x does not support an active GPS/GNSS antenna. Table 4-32: GNSS Antenna Specifications Characteristics Value Frequency GPS L1 15631587 GLONASS G1 15931610 RF Impedance (RF_GNSS pad) VSWR max 50 2:1 Unit MHz MHz W 4.16.1 GNSS Performance Table 4-33 summarizes the HL781x modules GNSS performance characteristics. Conditions Typical Value Table 4-33: GNSS Performance Parameters Sensitivity Cold Start Hot Start Tracking Time To First Fix (TTFF) Cold start, Input power -130 dBm Hot start, Input power -130 dBm 2D Position Error Input power -130 dBm

-145.8 dBm

-152 dBm

-161 dBm 39s 1s 1.29 m Rev. 5 October 2022 64 41114133 5: Mechanical Drawings For tolerances, refer to Table 1-2 and Table 1-3. 5 Figure 5-1: Mechanical Drawing Note: HL7812 shield displayed. (HL7810 shield does not have center cutouts.) Figure 5-2: Dimensions Drawing Rev. 5 October 2022 65 41114133 Product Technical Specification Figure 5-3: Footprint Drawing Rev. 5 October 2022 66 41114133 6: Design Guidelines 6 6.1 Power Supply Design When designing the power supply, make sure VBAT_BB/VBAT_RF meet the requirements listed in Table 3-2 Sierra Wireless recommends adding a 30% design margin, if possible. Careful attention should be paid to the following:

Power supply design A low-ripple, low-noise source such as LDO, battery, or switching power supply (SMPS) is recommended.

(HL7812 GSM Tx) Capacity to deliver high current peaks in a short time VBAT_BB/VBAT_RF must support peak currents with an acceptable voltage drop that guarantees the minimum required VBAT_BB/VBAT_RF value. VBAT_BB/VBAT_RF signal voltage must never exceed the maximum value, otherwise the module may be severely damaged. If necessary, add a voltage limiter to the modules power supply lines to ensure VBAT will never receive a voltage surge over 4.35V. There are a few protection options from a basic linear regulator to a voltage limiter, as simple as a Zener diode. ESD protection is recommended on VBAT_BB/VBAT_RF supply rails Sierra Wireless recommends Diodes Inc part number D8V0L1B2LP3-7. Both over-voltage protection and ESD protection devices will increase platform current consumption. All ground pins (C30, C32, C37, C39, C48, C50, CG1CG4, G1G16) must be connected to the same net. 6.2 UIM1 UIM1 can operate at clock rates up to 5 MHz. Most UIM1 signal lines do not require a buffer during Hibernate, and can be directly connected to the UIM card or holder. A buffer is required for UIM_DET1 if powered from the host (not required if powered from VGPIO). Decoupling capacitor(s) must be added to UIM1_VCC and UIM1_DET, as close as possible to the UIM card. Decoupling capacitors for UIM1_CLK, UIM1_RST, and UIM1_DATA are recommended to be added as placeholders for potential EMC issues. The two resistors (RCLK and RDAT) should be added as placeholders to compensate for potential layout issues. Both can be populated to slew the UIM1 signals, if required. The UIM1_DATA trace should be routed away from the UIM1_CLK trace. Keep the distance between the module and the UIM holder as short as possible. Sierra Wireless recommends using the following ESD protection on the UIM1 interface:

INFINEON ESD112-B1-02EL E6327 UIM1_CLK, UIM1_DATA, UIM1_RESET Diodes Inc D8V0L1B2LP3-7 UIM1_VCC, UIM1_DET Figure 6-1 illustrates the recommended implementation of a UIM interface Rev. 5 October 2022 67 41114133 Product Technical Specification UIM1_VCC UIM1_RESET UIM1_CLK HL781x GND UIM1_DATA VGPIO UIM1_DET 1 uF DNI 100 nF 1 nF ESD 100 nF DNI ESD 100 nF DNI ESD RCLK 0ohm RDATA DNI ESD 100 nF DNI ESD C10 1 kohm 100 nF DNI 1 nF C1 C2 C3 C4 C5 C6 C7 C8 C9 UIM Holder Figure 6-1: EMC and ESD Components Close to the USIM 6.3 USB Interface The USB interfaces requires 90 differential pair routing to the host side. For USB operation, USB_VBUS is a mandatory connection. The host must ensure USB_VBUS is provided before establishing USB communication. When the USB interface is externally accessible, ESD protection is required on the USB_VBUS, USB_D+ and USB_D- signals. R O T C E N N O C Common mode choke USB_VBUS USB_D+

USB_D HL781x Figure 6-2: ESD Suppressors for USB FS Sierra Wireless recommends using the following for ESD and EMI protection:

ESD diodes INNOCHIPS ULCE0505A015FR for USB data lines, and Diodes Inc D8V0L1B2LP3-7 for USB_VBUS Optional common mode choke for EMI protection, depending on customer require-

ments Panasonic EXC24CG900U Rev. 5 October 2022 68 41114133 Design Guidelines 6.4 ESD Protection for I/Os ESD protection is highly recommended where module signals (GPIO, UART, H/W control, Indication, ADC, Clock) are externally accessible and potentially subjected to ESD by the user. Sierra Wireless recommends using Diodes Inc D8V0L1B2LP3-7. 6.5 HibernateIsolation Requirements While the module is in Hibernate mode, the host platform (MCU) interfaces can remain powered. Important: To prevent these signals from back-powering the module, the host platform should make sure to isolate themthe signals should not be driven high (e.g. > 0.2 V). To ensure the host platform does not back-power the module:

The host can add a buffer circuit to isolate module I/O during Hibernate. Sierra Wireless recommends using VGPIO to tristate I/O signals. The MCU can tristate any I/O that does not have an external PU/PD. Note: A buffer is not required in Lite Hibernate mode. If adding a buffer circuit, consider the signal type:

Bidirectional (Input/Output) signals For module I/O signals (e.g. GPIOs), an analog switch that can tri-state both the output and the input can be used (e.g. Texas Instru-

ments TMUX1511). As shown in Figure 6-3, I/O signals connected to the buffer will be tri-stated. Directional (Input) signals For module inputs (e.g. UART1_TX), a logic buffer with output tri-state mode can be used (e.g. Texas Instruments SN74LVC1G126). As shown in Figure 6-4, the signal is controlled and, when disabled, the output signal is tri-stated. Note: Parts and usage descriptions above are intended as examples to assist the host platform designer in developing an appropriate solution for the platform. Selection and use of specific parts is the responsibility of the host platform designer. Control of the buffer circuit is based on the status of VGPIO for details, see VGPIO Monitoring and Buffer Control. Rev. 5 October 2022 69 41114133 Product Technical Specification Various signal typ es (GPIO, UART,etc.) Bidirectionalbuffer VGPIO BufferEN HL781x OptionalVoltage DetectionCircuit Figure 6-3: Example-Buffer - Bidirectional Signal Directionalbuffer Customer Platform Inputsignal

(e.g.UART1_TX) VGPIO HL781x BufferEN OptionalVoltage DetectionCircuit Customer Platform Figure 6-4: Example-Buffer - Directional Signal 6.5.1 VGPIO Monitoring and Buffer Control Because the host platform can remain powered in Hibernate and Reset states, the host platform must react quickly, when VGPIO transitions low, to ensure signals do not back-

power the module. The host platform can monitor VGPIO to determine the HL781x modules current operating mode for details, see VGPIO. To ensure faster detection of VGPIO transitions, Sierra Wireless recommends adding an optional voltage detection circuit (as shown in Figure 6-3 and Figure 6-4) to monitor and detect the transition low, and then control (enable/disable) the associated buffer circuit. Note: VGPIO can be used to directly connect to the buffer enable signal but the host platform must ensure that all host outputs are not driven high (i.e. > 0.2 V) before the module enters Hibernate mode. Rev. 5 October 2022 70 41114133 Design Guidelines 6.6 Radio Frequency Integration The HL781x is equipped with an external antenna. 6.6.1 Antenna Matching Circuit A 50 line matching circuit between the module, the customer's board and the RF antenna is required as shown in Figure 6-5. Because matching is dependent on the customers platform, values marked as TBD for the recommended components must be determined by the customer. HL781x RF_GNSS RF_MAIN TBD TBD TBD 33pF Figure 6-5: Antenna Connection Sierra Wireless recommends using the following ESD diodes:

Panasonic EZAEG1N50AC for RF_MAIN Diodes Inc. D5V0X1B2LP3-7 for RF_GNSS 6.6.2 RF Circuit The RF signal must be routed on the application board using tracks with a 50characteristic impedance. The characteristic impedance depends on the dielectric, the track width and the ground plane spacing. It is recommended to use stripline design if the RF path is fairly long (more than3 cm), since microstrip design is not shielded. Consequently, the RF (transmit) signal may interfere with neighboring electronic circuits. In the same way, the neighboring electronics

(micro-controllers, etc.) may interfere with the RF (receive) signal and degrade the reception performance. The RF trace on the development board is routed from the module antenna port to the RF connector (SMA). The RF trace is designed as a 50 coplanar stripline and its length is 24.8 mm. Rev. 5 October 2022 71 41114133 Product Technical Specification The following drawings show the location of the Sierra Wireless HL781x on the development board, the routing cross section and the top view of the RF trace on the development board. RF connector main GPS connector Embedded module RF connector

(AUX) RF trace end vias to connect to the HL781x antenna port at one end and the RF connector at the other end. Figure 6-6: Module Location on Development Board GPS connector W = 11.2 Mil G = 24 Mil Ground vias RF trace routing Figure 6-7: Development Board RF Trace Design Rev. 5 October 2022 72 41114133 7: Reliability Specification 7 The Sierra Wireless HL781x will be tested against the Sierra Wireless Industrial Reliability Specification defined below. 7.1 Preconditioning Test Per JESD22A113, this tests the preconditioning of non-hermetic surface mount devices prior to reliability testing. Table 7-1: Preconditioning Test Designation Condition Preconditioning Test PCRM 2 reflow cycles with Tmax 245-250C 7.2 Performance Test Table 7-2: Performance Test Designation Performance Test PT3T & PTRT Condition Standard: N/A Special conditions:

Temperature:

Class A: -30C to +70C Class B: -40C to +85C Rate of temperature change: 3C/min Recovery time: 3 hours Operating conditions: Powered Duration: 14 days Rev. 5 October 2022 73 41114133 Product Technical Specification 7.3 Aging Tests Table 7-3: Aging Tests Designation Condition High Temperature Operating Life test HTOL Standard: IEC 60068-2-2, Test Bb Special conditions:

Temperature: +85C Temperature variation: 1C/min Operating conditions: Powered ON with a power cycle of 45 minutes ON and 15 minutes Idle Duration: 20 days Thermal Shock Test TSKT Humidity Test HUT Standard: IEC 60068-2-14, Test Na Special conditions:

Temperature: -40C to +85C Temperature Variation: less than 30s Number of cycles: 300 Dwell Time: 10 minutes Operating conditions: Unpowered Duration: 7 days Standard: IEC 60068-2-3, Test Ca Special conditions:

Temperature: +85C RH: 85%

Operating conditions: Powered on, DUT is powered up for 15 minutes and OFF for 15 minutes. Duration: 10 days Rev. 5 October 2022 74 41114133 7.4 Characterization Tests Reliability Specification Designation Condition Low Temperature and Cold Start Cycles LTCS Special conditions:

Temperature: -40C AT commands read or write memory Operating conditions: 5 mins powered ON, 30 mins powered OFF (1 power cycle) Duration: 5 days Component Solder Wettability CSW Standard: JESD22 - B102, Method 1/Condition C, Solderability Test Method Special conditions:

Test method: Surface mount process simulation test (preconditioning 16 h 30 minutes dry bake) Operating conditions: Unpowered Duration: 1 day Unprotected Free Fall Test FFT1 Standard: IEC 680068-2-32, Test Ed Special conditions:

Number of drops: 6 drops per unit (1 drop per direction: X, Y, Z) Height: 1m Operating conditions: Unpowered Duration: 1 day Rev. 5 October 2022 75 41114133 8: Legal Information 8 8.1 Disposing of the Product This electronic product is subject to the EU Directive 2012/19/EU for Waste Electrical and Electronic Equipment (WEEE). As such, this product must not be disposed of at a municipal waste collection point. Please refer to local regulations for directions on how to dispose of this product in an environmental friendly manner. 8.2 Compliance Acceptance and Certification The Sierra Wireless HL7810/ /Sierra Wireless HL7812 is designed to be compliant with the 3GPP Release 14 E-UTRA Specification for Mobile Terminated Equipment.The Sierra Wireless HL7812 is designed to be compliant with the 3GPP Release 9 UTRA and Release 13 E-UTRA Specifications for Mobile Terminated Equipment. Final regulatory and operator certification requires regulatory agency testing and approval with the fully integrated UE host device incorporating the Sierra Wireless HL7810/ /Sierra Wireless HL7812 module. The OEM host device and, in particular, the OEM antenna design and implementation will affect the final product functionality, RF performance, and certification test results. Note: Tests that require features not supported by the Sierra Wireless HL7810 / /Sierra Wireless HL7812 (as defined by this document) are not supported. 8.3 Regulatory and Industry Approvals/

Certifications The Sierra Wireless HL7810/ /Sierra Wireless HL7812 module is designed to meet, and upon commercial release, will meet the requirements of the following regulatory bodies and regulations, where applicable:

Federal Communications Commission (FCC) of the United States The Certification and Engineering Bureau of Industry Canada (IC)

(HL7810 ) The National Communications Commission (NCC) of Taiwan, Republic of China Regulatory Compliance Mark (RCM), Electrical Regulatory Authorities Council

(Australia and New Zealand) Radio Equipment Directive (RED) of the European Union Ministry of Internal Affairs and Communications (MIC) of Japan Upon commercial release, the following industry certifications will have been obtained, where applicable:

GCF PTCRB Rev. 5 October 2022 76 41114133 Legal Information Additional certifications and details on specific country approvals may be obtained upon customer request contact your Sierra Wireless account representative for details. Additional testing and certification may be required for the end product with an embedded HL7810 / /HL7812 module and are the responsibility of the OEM. Sierra Wireless offers professional services-based assistance to OEMs with the testing and certification process, if required. 8.4 Important Compliance Information for North American Users The Sierra Wireless HL7810 and Sierra Wireless HL7812 modules have been granted modular approval for mobile applications under:

Sierra Wireless HL7810 FCC ID: N7NHL78A Sierra Wireless HL7812 FCC ID: N7NHL78C Sierra Wireless HL7810 IC ID: 2417C-HL78A Sierra Wireless HL7812 IC ID: 2417C-HL78C Integrators may use these modules in their end products without additional FCC/IC

(Industry Canada) certification if they meet the following conditions. Otherwise, additional FCC/IC approvals must be obtained. 1. The end product must use the RF trace design approved with the HL7810 or HL7812. The Gerber file of the trace design can be obtained from Sierra Wireless upon request. 2. At least 20 cm separation distance between the antenna and the users body must be maintained at all times. 3. To comply with FCC/IC regulations limiting both maximum RF output power and human exposure to RF radiation, the maximum antenna gain including cable loss in a mobile-only exposure condition must not exceed the limits stipulated in Table 8-1. Rev. 5 October 2022 77 41114133 Product Technical Specification Table 8-1: Product Name Antenna Gain Specifications Device Technology Band Frequency (MHz) Maximum antenna gain (dBi) Standalone Collocated Sierra Wireless HL7810 Sierra Wireless HL7812 LTE B2 B4 B5 B8 B12 B13 B25 B26 B66 B85 18501910 17101755 824-829 897.5-900.5 699-716 777-787 1850-1915 814-849 6 5.5 6 6 6 6 6 6 1710-1780 5.5 698-716 6 3 2 6 5.5 4 4 4 4 6 4 5.5 4 1 2 Sierra Wireless HL7812 GPRS GPRS G850 824-849 GPRS G1900 1850-1910 4. The HL7810 or HL7812 may transmit simultaneously with other collocated radio transmitters within a host device, provided the following conditions are met:

Each collocated radio transmitter has been certified by FCC/IC for mobile appli-

cation. At least 20 cm separation distance between the antennas of the collocated trans-

mitters and the users body must be maintained at all times. The radiated power of a collocated transmitter must not exceed the EIRP limit stipu-

lated in Table 8-2. Table 8-2: HL7810, HL7812 Collocated Radio Transmitter Specifications Device Technology Frequency (MHz) EIRP Limit (dBm) Collocated transmittersa WLAN 5 GHz 51505850 WLAN 2.4 GHz 24002500 BT 24002500 30 30 16 a. Valid collocated transmitter combinations: WLAN+BT; WiGig+BT. (WLAN+WiGig+BT is not permit-

ted.) 5. A label must be affixed to the outside of the end product into which the HL7810 or HL7812 is incorporated, with a statement similar to the following:

(HL7810) This device contains FCC ID: N7NHL78A / IC: 2417C-HL78A

(HL7812) This device contains FCC ID: N7NHL78C / IC: 2417C-HL78C Rev. 5 October 2022 78 41114133 Legal Information 6. A user manual with the end product must clearly indicate the operating requirements and conditions that must be observed to ensure compliance with current FCC/IC RF exposure guidelines. The end product with an embedded HL7810 or HL7812 may also need to pass the FCC Part 15 unintentional emission testing requirements and be properly authorized per FCC 15. If this module is intended for use in a portable device, you are responsible for separate approval to satisfy the SAR requirements of FCC Part 2.1093 and IC RSS-102. 8.5 Legal Information Taiwan NCC Statement

. Rev. 5 October 2022 79 41114133 A: Appendix For more details, several references can be consulted, as detailed below. A.1 Website Support Check source.sierrawireless.com for the latest documentation available for HL781x modules. A A.2 Reference Documents HL78xx Customer Process Guidelines Reference Number: 41112095 HL78xx AT Commands Interface Guide Reference Number: 41111821) HL Series Development Kit User Guide Reference Number: 4114877 HL78xx Low Power Modes Application Note Reference Number: 2174229) HL78xx Customization Guide Application Note Reference Number: 2174213 Sierra Wireless Ready-to-Connect Module Integration Guide Reference Number: 41113385 HL780x Firmware Update Methods Application Note Reference Number: 2174259 Rev. 5 October 2022 80 41114133 A.3 Terms and Abbreviations Term / Abbreviation Definition Active state ADC AT All sub-systems, including the MAP process, are up and running. User can access module via UART (e.g. to configure/query module settings/

states, and send/receive data. Analog to Digital Converter Attention (prefix for modem commands) AT-READY Module is initialized and ready to accept AT commands Cat-M1 Cat-NB1 CF3 CLK DTR DRX eDRX EIRP EMC EMI EN ESD ETSI LTE enhanced Machine Type Communication (eMTC) Category M1

(3GPP Release 14) LTE Narrowband Internet of Things (NB-IoT) Category NB1 (3GPP Release 14) Common Flexible Form Factor Clock Data Terminal Ready Discontinuous Reception Extended DRX Equivalent Isotropically Radiated Power Electro-Magnetic Compatibility Electro-Magnetic Interference Enable Electro-Static Discharges European Telecommunications Standards Institute GLONASS Global Navigation Satellite System GND GNSS GPIO GPRS GPS GSM Hi Z IC I/O LED Ground Global Navigation Satellite System General Purpose Input Output General Packet Radio Service Global Positioning System Global System for Mobile communications High impedance (Z) Industry Canada Input/Output Light Emitting Diode Rev. 5 October 2022 81 41114133 Product Technical Specification Term / Abbreviation Definition MAX MIN N/A PA PC PCB PCL Maximum Minimum Not Applicable Power Amplifier Personal Computer Printed Circuit Board Power Control Level periodic TAU See TAU PSM PTW PWM RF RST RTC RX SIM SINR SW TAU TBC TBD TP TX TYP UART UICC USB UIM UMTS Power Save Mode Paging Transmission Window Pulse Width Modulation Radio Frequency Reset Real Time Clock Receive Subscriber Identification Module Signal to Interference plus Noise Ratio Software Tracking Area Update TAUAn update sent when the PSM parameters are changed or when the module changes location. periodic TAUSent by the module to notify its availability to the network. To Be Confirmed To Be Determined To Be Defined Test Point Transmit Typical Universal Asynchronous Receiver-Transmitter Universal Integrated Circuit Card Universal Serial Bus User Identity Module Universal Mobile Telecommunications System Rev. 5 October 2022 82 41114133 Term / Abbreviation Definition USIM VBAT_BB VSWR UMTS Subscriber Identity Module Main Supply Voltage from Battery or DC Adapter Voltage Standing Wave Ratio A.4 Ordering Information Model Name Description Part Number HL7810 HL7812 DEV-KIT HL7810 embedded module Contact Sierra Wireless for the latest SKU. HL7812 embedded module Contact Sierra Wireless for the latest SKU. HL781x Development Kit 6001210 Rev. 5 October 2022 83 41114133

Sierra Wireless, Inc. 13811 Wireless Way, Richmond, BC V6V 3A4, Canada Confidentiality Request Letter Date: October 17, 2022 Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Subject: Request for confidentiality FCC ID: N7NHL78A Long-Term Confidentiality Pursuant to Sections 0.457 and 0.459 of the Commissions Rules, we hereby request confidential treatment of information accompanying this application as outlined below:

Schematics Block Diagrams Theory of Operation Bill of Materials/Parts List Tune-up procedure The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. The applicant understands that pursuant to Section 0.457 of the Rules, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Short-Term Confidentiality (STC) Pursuant to DA04-1705 June 15, 2004 of the Commissions public notice, we also request temporary confidential treatment of information accompanying this application as outlined below:

Internal Photos External Photos Users Manual Test Set-up Photos Justification: Those documents contains sensitive business information about the product design Planned Release Date STC:

If no date is given, 180 days from grant date will be used. Sincerely, Signature Contact Name: Denis Chabot Job Title: Director, Certification Email: DChabot@sierrawireless.com

Justification of test data reuse (HL7810) June 27th, 2022 Comparison Model Name: HL7800 FCC ID: N7NHL78 Supported Frequency bands Cat-M1/NB1: B1, B2, B3, B4, B5, B8, B9, B10, B12, B13, B17, B18, B19, B20, B25, B26, B27, B28, B66 IC: 2417C-HL78 Model Name: HL7810 FCC ID: N7NHL78A IC: 2417C-HL78A Supported Frequency bands Cat-M1/NB1/NB2: B1, B2, B3, B4, B5, B8, B12, B13, B18, B19, B20, B25, B26, B28, B66, B85 B8 is covering the range as defined in Part 27 SubPart P NB2 is supported through a FW upgrade no impact 2 Comparison (continued) Both modules have the same form factor, I/O interface, shielding and antenna connectors. Schematics:

Both modules share the same schematics Band 8 was already supported in the original product Band 85 is enabled by FW, no change in HW required PCB Layout:

Both modules use a closely similar PCB, with some passive (resistors/capacitors) updated to accommodate those components end-of-life. 3 Layout (HL7800/HL7810) HL7800 HL7810 4 RF Results The components in HL7810 design are identical to HL7800s in terms of characteristics. The RF performance of HL7800 and HL7810 are identical with the exception that the HL7810 modules includes additional support for Band 85 (Band 8 was already supported in HL7800 as per 3GPP, not as per FCC Part 27). All test data of HL7800 per FCC Part 22, 24, 27 and 90 as well as RSS-130, RSS-132, RSS-

133 and RSS0139 are valid for the HL7810 module and spot check testing for worst case measurements was performed on HL7810 to confirm results were within tolerance. All reports are available in original certification under N7NHL78 (FCC) and 2417C-HL78

(ISED) Test data for Band 8 and Band 85 are provided as tested against HL7810. As such, LTE results from HL7800 can be reused for the FCC/IC certification of HL7810 5 Thank you 13811 Wireless Way :: Richmond, British Columbia, Canada, V6V 3A4 sierrawireless.com

Limited Modular Approval Checklist FCC ID: N7NHL78A Item Requirements 1 2 3 4 5 6 7 The radio elements must have the radio frequency circuitry shielded The module must have buffered modulation/data inputs The module must contain power supply regulation on the module The module must contain a permanently attached antenna, or contain a unique antenna connector, and be marketed and operated only with specific antenna(s) The module must demonstrate compliance in a stand-alone configuration The licensed module must have a FCC ID label on the module itself. That FCC ID label must be visible through a window on the final device or it must be visible when an access panel, door or cover is easily removed. If not, a second label must be placed on the outside of the final device that contains the following text:

Contains FCC ID: N7NHL78A The module must comply with all specific rules applicable to the transmitter. The grantee must provide comprehensive instructions to explain compliance requirements 8 The module must comply with RF exposure requirements EUT Module RADIO elements are shielded. Please see submitted external photograph exhibits Module chipset design incorporates integrated buffer circuitry Module chipset incorporates voltage regulation to transceiver circuitry No applicable to licensed modules EUT conformance testing was performed in a standalone configuration Please refer to FCC ID label format. Labeling instruction has been provided in the user manual exhibit(s). The Module is compliant with all applicable FCC rules. Compliance requirements are stated in the user manual exhibit(s). Compliance with RF exposure requirements is addressed in RF exposure report Sincerely, __________________________ Denis CHABOT By:

Director, Certification Title:

Sierra Wireless Inc. Company:

+852 2824 5222 Telephone:

dchabot@sierrawireless.com e-mail:

Sierra Wireless, Inc. 13811 Wireless Way, Richmond, BC V6V 3A4, Canada Authorization Letter Date: October 17, 2022 Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 FCC ID: N7NHL78A To Whom It May Concern:

We, the undersigned, hereby authorize the following person on our behalf, to apply to the Federal Communications Commission on our equipment. Any and all acts carried out by DEKRA Testing and Certification Co., Ltd. on our behalf shall have the same effect as acts of our own. Agent Company name

: DEKRA Testing and Certification Co., Ltd. Address

: No. 26, Hwaya 1st Road., Guishan District, Taoyuan City, 33341, Taiwan Contact Name

: Stanley Wu Email

: stanley.wu@dekra.com We are therefore responsible for the contents of the application. Product description

: Embedded module Model No. Brand Sincerely,

: HL7810

: AirPrime Signature Contact Name: Denis Chabot Job Title: DIrector, Certification Email: DChabot@sierrawireless.com