FCC ID: 2AATL3161ASL WIFI Module 3161A-SL

3161A-SL Wi-Fi Single-band 1X1 802.11b/g/n SDIO Module Datasheet FN-LINK TECHNOLOGY LIMITED Proprietary & Confidential Information 3161A-SL Module Datasheet Office: 6 Floor, Building U6, Junxiang U8 Park, Hangcheng Avenue, Bao'an District, Shenzhen City, CHINA Factory: No.8, Litong Road, Liuyang Economic & Technical Development Zone, Changsha, Hunan, CHINA TEL: +86-755-2955-8186 Website: www.fn-link.com Customer Approval :

Company Title Signature Date Fn-Link FN-LINK TECHNOLOGY LIMITED Proprietary & Confidential Information 3161A-SL Revision History Version Date Revision Content Draft Approved 1.0 1.1 2020/04/22 New version 2020/05/30 Add 1line sdio application Lxy Lxy Szs Szs FN-LINK TECHNOLOGY LIMITED Proprietary & Confidential Information CONTENTS 3161A-SL 1 Overview....................................................................................................................................1 1.1 Introduction......................................................................................................................... 1 1.2 Features.............................................................................................................................. 1 1.3 General Specification........................................................................................................ 2 1.4 Recommended Operating Rating....................................................................................2 2 Wi-Fi RF Specification........................................................................................................... 3 2.1 2.4GHz RF Specification.................................................................................................. 3 3 Pin Assignments..................................................................................................................... 3 3.1 Pin Outline...........................................................................................................................4 3.2 Pin Definition.......................................................................................................................5 4 Dimensions...............................................................................................................................7 4.1 Module Picture................................................................................................................... 7 4.2 Marking Description...........................................................................................................7 4.3 Module Physical Dimensions........................................................................................... 8 4.4 Layout Recommendation..................................................................................................8 5 Host Interface Timing Diagram......................................................................................... 10 5.1 SDIO Pin Description...................................................................................................... 10 5.2 SDIO CLK Timing Diagram............................................................................................ 10 6 Reference Design................................................................................................................. 19 6.1 Low Power Dissipation Reference Design.................................................................. 19 6.2 Normal Power dissipation Reference Design............................................................. 20 7 Ordering Information........................................................................................................... 21 8 The Key Material List........................................................................................................... 21 9 Power on Sequence............................................................................................................. 22 10 Design Attention................................................................................................................. 22 11 Recommended Reflow Profile.........................................................................................22 12 Packing Information...........................................................................................................23 12.1 Reel................................................................................................................................. 23 12.2 Carrier Tape Detail........................................................................................................ 24 12.3 Packaging Detail............................................................................................................24 12.4 Moisture sensitivity........................................................................................................ 25 FN-LINK TECHNOLOGY LIMITED Proprietary & Confidential Information 3161A-SL 1 Overview 1.1 Introduction 3161A-SL is a highly integrated 2.4 GHz Wi-Fi module that support the IEEE 802.11b/g/n baseband and RF circuit. It supports 20 MHz standard bandwidth and 5 MHz/10 MHz narrow bandwidth, and provides a physical layer rate up to 72.2 Mbit/s. Wi-Fi baseband supports the orthogonal frequency division multiplexing (OFDM) technology and is backward compatible with the direct sequence spread spectrum (DSSS) and complementary code keying (CCK) technologies, offering various data rates defined in the IEEE 802.11 b/g/n protocol. Module chipset integrates a high-performance 32-bit microprocessor, a hardware security engine, and various peripheral interfaces, including the SPI, UART, I2C, PWM, GPIO, and multi-channel ADC. In addition, it provides high-speed SDIO2.0 slave interfaces, with clock frequency up to 50 MHz. Its built-in SRAM and flash can operate independently and even programming is allowed on the flash. Block Diagram:

1.2 Features Operate at ISM frequency bands (2.4GHz) FN-LINK TECHNOLOGY LIMITED 1 Proprietary & Confidential Information 3161A-SL Maximum rate of 72.2 Mbit/s@HT20 MCS7 SDIO interface for Wi-Fi Low power dissipation High transmitting power High receiving sensitivity PHY supporting IEEE 802.11b/g/n MAC supporting IEEE802.11 d/e/h/i/k/v/w Module integrated 32K clock WFA WPA, WFA WPA2 personal, and WPS2.0 for Wi-Fi Built-in 352 KB SRAM and 288 KB ROM Main chipset Built-in 32bit MCU and 2 MB flash memory 1.3 General Specification Model Name 3161A-SL Product Description Support Wi-Fi functionality Dimension Wi-Fi Interface L x W x H: 12 x 12 x2.3 (typical) mm Support SDIO Ambient temperature

-40C to 85C Storage temperature

-40C to 85C RoHS RoHS directive 1.4 Recommended Operating Rating All hardware components are fully compliant with EU Ambient temperature VCC VDDIO Min. Typ. Max. Unit

-40 2.3

25 3.3 1.8V/3.3V 85 3.6

deg.C V V VCC = 3.3V(Unit:mA) Power Consumption

(2.4G HT20@17dbm) Sleep Mode TX Test mode RX Test mode

(2.4G HT20) 5uA 288 53 Note: Suggested power input range in 3.3V. FN-LINK TECHNOLOGY LIMITED 2 Proprietary & Confidential Information 3161A-SL 2 Wi-Fi RF Specification 2.1 2.4GHz RF Specification Feature WLAN Standard Frequency Range Description IEEE 802.11 b/g/n Wi-Fi compliant 2.4002.4835GHz Number of Channels Wi-Fi:

US: channel 1~11;

EU: channel 1~13;

Japan: channel 1~14;

Spectrum Mask Min. b/g/n Typ. b/g/n Max. b/g/n Unit b/g/n 1st side lobes(to fc 11MHZ) 2st side lobes(to fc 22MHZ)

-43/-30/-40

-52/-33/-58

dBr dBr ppm Freq. Tolerance Test Items Output Power Test Items SISO Receive Sensitivity

(11g,20MHz) @10% PER SISO Receive Sensitivity

(11n,20MHz) @10% PER

-20/-20/-20

20/20/20 Typical Value 802.11b /11Mbps : 16dBm 1.5 dB EVM -10dB 802.11g /54Mbps : 16dBm 1.5 dB EVM -25dB 802.11n /MCS7 : 16dBm 1.5 dB EVM -28dB EVM Test Value 1Mbps 2Mbps Standard Value PER @ -97 dBm

-94 dBm PER @ -95 dBm

-92 dBm

- 11Mbps PER @ -90 dBm

-87 dBm 6Mbps 9Mbps PER @ -94 dBm

-89 dBm PER @ -92 dBm

-88 dBm

- 12Mbps PER @ -91 dBm

-87 dBm

- 18Mbps PER @ -88 dBm

-86 dBm

- 24Mbps PER @ -85 dBm

-84 dBm

- 36Mbps PER @ -82 dBm

-80 dBm

- 48Mbps PER @ -79 dBm

-77 dBm

- 54Mbps PER @ -77 dBm

-75 dBm

- MCS=0 PER @ -93 dBm

-89 dBm

- MCS=1 PER @ -90 dBm

-86 dBm

- MCS=2 PER @ -89 dBm

-84 dBm

- MCS=3 PER @ -85 dBm

-82 dBm

- MCS=4 PER @ -82 dBm

-79 dBm SISO Receive Sensitivity

(11b,20MHz) @8% PER

- 5.5Mbps PER @ -92 dBm

-89 dBm FN-LINK TECHNOLOGY LIMITED 3 Proprietary & Confidential Information 3161A-SL

- MCS=5 PER @ -78 dBm

-76 dBm

- MCS=6 PER @ -76 dBm

-74 dBm

- MCS=7 PER @ -73 dBm

-72 dBm Maximum Input Level 802.11b: -10 dBm 802.11g/n: -20 dBm Antenna Reference PCB antenna with 0~2 dBi peak gain 3 Pin Assignments 3.1 Pin Outline

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FN-LINK TECHNOLOGY LIMITED 4 Proprietary & Confidential Information 6 Host wake device Host Wake up Wi-Fi,GPIO06 GPIO or configured as SDIO interrupt pin.

(If not used keep Floating) Floating (Dont connected to ground) Main power voltage source input 2.3V-3.6V 3.3V 3.2 Pin Definition NO Type Name GND WL_ANT GND NC NC GPIO8 NC VCC NC NC 12 PMU_POWRON GPIO2 SDIO_DATA_2 SDIO_DATA_3 17 SDIO_DATA_CLK SDIO_DATA_0 SDIO_DATA_1 GND NC VDDIO NC RTC_CLK O RTC_CLK I NC NC NC NC NC GND NC 1 2 3 4 5 7 8 9 10 11 13 14 15 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 I/O I I/O P I I/O I/O I/O I I/O I/O P I/O I 3161A-SL Voltage VDDIO VDDIO VDDIO VDDIO VDDIO VDDIO VDDIO VDDIO VDDIO VDDIO Description Ground connections RF I/O port Ground connections Floating (Dont connected to ground) Floating (Dont connected to ground) Floating (Dont connected to ground) Floating (Dont connected to ground) Enable pin for WLAN device Defualt ON: pull high ; OFF: pull low SDIO data interrupt,or GPIO function. SDIO data line 2, GPIO09 SDIO data line 3, GPIO10 SDIO clock line, GPIO12 SDIO data line 0, GPIO13 SDIO data line 1, GPIO14 Ground connections Floating (Dont connected to ground) I/O Voltage supply input 1.8V/3.3V VDDIO Floating (Dont connected to ground) Floating(module have 32K clock), GPIO00 Floating(module have 32K clock), GPIO01 VDDIO VDDIO Floating (Dont connected to ground) Floating (Dont connected to ground) Floating (Dont connected to ground) Floating (Dont connected to ground) Floating (Dont connected to ground) Ground connections Floating (Dont connected to ground) 16 SDIO_DATA_CMD I/O SDIO command line, GPIO11 FN-LINK TECHNOLOGY LIMITED 5 Proprietary & Confidential Information 3161A-SL 37 UART_LOG_TX For firmware download, VDDIO GND NC NC GND NC NC NC NC

I O Ground connections Floating (Dont connected to ground) Floating (Dont connected to ground) Ground connections UART0_LOG_TX,GPIO03 can floating this pin UART0_LOG_RX,GPIO04 can floating this pin Wi-Fi reset pin. GPIO07 Floating (Dont connected to ground) Floating (Dont connected to ground) Floating (Dont connected to ground) Floating (Dont connected to ground) 38 UART_LOG_RX For firmware download, VDDIO 39 WL_RST Low: reset enable, Defualt High: reset disable 40 Dev_Wake_Host Wi-Fi wake up host. GPIO05 VDDIO VDDIO P:POWER I:INPUT O:OUTPUT 3.3 Muti Pin definition 3861L all GPIO pin can configure as muti function,detail see below information. Pin NAME F.0 F.1 F.2 F.3 F.4 F.5 F.6 F.7 F.8 GPIO00 GPIO00 UART1_TXD SPI1_CLK PWM3 I2C1_SDA RTC_OSC_32K RTC32K_XOUT GPIO01 GPIO01 UART1_RXD SPI1_RXD PWM4 I2C1_SCL RTC32K_XINT GPIO02 GPIO02 UART1_RTS SPI1_TXD PWM2 SSI_CLK

GPIO03 UART0_LOG_TX UART1_CTS SPI1_CS1 PWM5 I2C1_SDA SSI_DATA GPIO03 GPIO04 UART0_LOG_RX

PWM1 I2C1_SCL GPIO04 GPIO05 UART1_RXD GPIO05 I2S0_MCK PWM2 BT_STATUS SPI0_CS1 GPIO06 UART1_TXD GPIO06 I2S0_TX PWM3 COEX_SWITH SPI0_CLK

39 GPIO07 UART1_CTS GPIO07 I2S0_CLK PWM0 BT_ACTIVE SPI0_RXD ADC3 GPIO08 UART1_RTS GPIO08 I2S0_WS PWM1 WLAN_ACTIVE SPI0_TXD GPIO09 GPIO09 UART2_RTS SPI0_TXD PWM0 I2C0_SCL I2S0_MCK SDIO_D2 ADC4 GPIO10 GPIO10 UART2_CTS SPI0_CLK PWM1 I2C0_SDA I2S0_TX SDIO_D3 GPIO11 GPIO11 UART2_TXD SPI0_RXD PWM2 I2S0_RX SDIO_CMD ADC5 GPIO12 GPIO12 UART2_RXD SPI0_CS1 PWM3 I2S0_CLK SDIO_CLK ADC0 GPIO13 GPIO13 UART2_RTS UART0_LOG_TX PWM4 I2C0_SDA I2S0_WS SDIO_D0 ADC6 SSI_DATA ADC1 ADC2

33 34 35 36 41 42 43 44 24 25 13 37 38 40 6 7 14 15 16 17 18 FN-LINK TECHNOLOGY LIMITED 6 Proprietary & Confidential Information 19 GPIO14 GPIO14 UART2_CTS UART0_LOG_RX PWM5 I2C0_SCL

SDIO_D1

SSI_CLK 3161A-SL Notes 1. IO Ispu/O. 2. 1mA. 3. 3.3/1.8V. 4 Dimensions 4.1 Module Picture L x W : 12 x 12 (+0.3/-0.1) mm H: 2.3 (0.2) mm Weight 0.66g 4.2 Marking Description

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FN-LINK TECHNOLOGY LIMITED 7 Proprietary & Confidential Information 3161A-SL 4.3 Module Physical Dimensions

(Unit: mm)

< TOP VIEW >

6 5,125 4,75 4,25 3,85 3,35 2,95 2,45 2,05 1,55 1,15 0,65 0,25 6 5 2 1

, 5 7

, 4 5 5 2

, 4 5 8

, 3 5 3

, 3 5 9

, 2 5 4

, 2 5 0

, 2 5 5

, 1 5 1

, 1 5 6

, 0 5 2

, 0 4.4 Layout Recommendation

(Unit: mm) FN-LINK TECHNOLOGY LIMITED 8 Proprietary & Confidential Information

< TOP VIEW >

3161A-SL 6,25 6 5,125 4,75 4,25 3,85 3,35 2,95 2,45 2,05 1,55 1,15 0,65 0,25 5 2

, 6 6 5 2 1

, 5 7

, 4 5 5 2

, 4 5 8

, 3 5 3

, 3 5 9

, 2 5 4

, 2 5 0

, 2 5 5

, 1 5 1

, 1 5 6

, 0 5 2

, 0 FN-LINK TECHNOLOGY LIMITED 9 Proprietary & Confidential Information 3161A-SL The secure digital input/output (SDIO) interface supports three working modes:

The maximum frequency of the interface clock is 25 MHz. The interface clock can work 5 Host Interface Timing Diagram 5.1 SDIO Pin Description Default speed mode (DS) in 1-bit or 4-bit mode. High speed mode (HS) SDR25 mode The maximum frequency of the interface clock is 50 MHz. The maximum frequency of the interface clock is 50 MHz SDIO Pin Description SD 4-Bit Mode DATA0 Data Line 0 DATA1 Data Line 1 DATA2 Data Line 2 DATA3 Data Line 3 CLK CMD Clock Command Line 5.2 SDIO CLK Timing Diagram The DS mode is the default mode after the SDIO is powered on. To ensure compatibility with various host components, the DS mode requires a low working rate and supports only the 25 DS Mode MHz clock. FN-LINK TECHNOLOGY LIMITED 10 Proprietary & Confidential Information 3161A-SL Figure 8-6 shows the output data timing in DS mode. tISU is the setup time, that is, the stability time required by the data of the SDIO interface before clock sampling in this mode. tIH is the hold time, that is, the time required by the data of the SDIO interface to retain the original level after clock sampling in this mode. FN-LINK TECHNOLOGY LIMITED 11 Proprietary & Confidential Information 3161A-SL Figure 8-7 shows the input data timing in DS mode. Where, tODLY(max) is the maximum delay of the output data relative to the clock falling edge, and tODLY(min) is the minimum delay of the output data relative to the clock falling edge. Table 8-12 describes the timing restrictions in DS mode. FN-LINK TECHNOLOGY LIMITED 12 Proprietary & Confidential Information 3161A-SL Note: In DS mode, the output data is referenced to the clock falling edge, and the input data is referenced to the clock rising edge. HS Mode The HS mode is entered after the SDIO is powered on and initialized because a higher working rate than the DS mode is required. In HS mode, the clock supports 50 MHz. For details about the restrictions on the clock, see Table 8-13. FN-LINK TECHNOLOGY LIMITED 13 Proprietary & Confidential Information 3161A-SL Figure 8-8 shows the input data timing in HS mode. tISU is the setup time, that is, the stability time required by the data of the SDIO interface before clock sampling in this mode. tIH is the hold time, that is, the time required by the data of the SDIO interface to retain the original level after clock sampling in this mode Figure 8-9 shows the input data timing in HS mode. Where, tODLY(max) is the maximum delay of the output data relative to the clock rising edge, and tOH is the minimum delay of the output data relative to the clock rising edge. FN-LINK TECHNOLOGY LIMITED 14 Proprietary & Confidential Information 3161A-SL Table 8-15 describes the timing restrictions in HS mode. Table 8-16 Timing restrictions in HS mode (VDDIO = 1.8 V) FN-LINK TECHNOLOGY LIMITED 15 Proprietary & Confidential Information 3161A-SL Note: The data signal timing in HS mode is different from that in DS mode. The output data and input data are referenced to the clock rising edge. SDR25 Mode The SDR25 mode is entered only after the voltage of the SDIO is switched. In this mode, the maximum interface clock frequency is 50 MHz. Table 8-17 describes the clock restrictions. FN-LINK TECHNOLOGY LIMITED 16 Proprietary & Confidential Information 3161A-SL FN-LINK TECHNOLOGY LIMITED 17 Proprietary & Confidential Information 3161A-SL FN-LINK TECHNOLOGY LIMITED 18 Proprietary & Confidential Information 6 Reference Design 6.1 4line SDIO Reference Design 3161A-SL L1 10pF WL_ANT C1 NP C2 NP HOST WAKE DEV MUTI FUNCTION 3.3V C3 4.7uF 1 2 3 4 5 6 7 8 9 GND WL_ANT GND NC NC GPIO8 NC VBAT 10 11 NC NC HOST2DEV_WAKE 33 32 31 30 29 28 27 26 25 24 23 GND NC GND NC NC NC NC NC NC RTC_CLK RTC_CLK VDDIO R21 NC/47K R20 NC/47K R19 NC/47K R18 NC/47K SDIO_D2 SDIO_D3 SDIO_CMD SDIO_CLK SDIO_D0 SDIO_D1 HOST WAKE DEV PWRON SD_INT C39 NC/10pf UART0_LOG_RX UART0_LOG_TX WL_RST DEV WAKE HOST MUTI FUNCTION HOST HOST WAKE DEV PWRON SD_INT SDIO_D2 SDIO_D3 SDIO_CMD SDIO_CLK SDIO_D0 SDIO_D1 UART0_LOG_TX UART0_LOG_RX WL_RST DEV WAKE HOST GPIO O I D D V O I D D V R11 NC/4.7K R10 NC/4.7K C10 NC/680pF C11 NC/680pF X R _ G O L _ 0 T R A U X T _ G O L _ 0 T R A U T S R _ L W T S O H E K A W V E D E K A W _ T S O H 2 V E D 4 4 3 4 2 4 1 4 0 4 9 3 8 3 7 3 6 3 5 3 4 3 C N C N C N C N C N C N D N G T S R _ L W X R _ T R A U X T _ T R A U t p u r r e t i n _ D S N E _ W O P 2 _ A T A D _ O I D S 3 _ A T A D _ O I D S D M C _ A T A D _ O I D S K L C _ A T A D _ O I D S 0 _ A T A D _ O I D S 1 _ A T A D _ O I D S D N G C N O I D D V 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 1 0 2 1 2 2 2 N O R W P I T N _ D S 22R 22R 22R 22R 22R 22R R1 R5 R6 R7 R8 R9 O I D D V VDDIO C8 4.7uF SDIO_D1 SDIO_D0 SDIO_CLK SDIO_CMD SDIO_D3 SDIO_D2 Notes:

1. 4line WLAN module application, all wake function may not supported;

2. Can using Power EN pin to shut down module for power saving;

FN-LINK TECHNOLOGY LIMITED 19 Proprietary & Confidential Information 6.2 1line SDIO Reference Design 3161A-SL 1. Hi3861L Hi18EV300 GPIO8 GPIO11 GPIO12 GPIO13 Hisyslink Hi3861L SDIO 1 3161A WIFI (PORPower On Reset)GPIO2/GPIO6/GPIO8 2. Flash GPIO2/GPIO6/GPIO8 PIR USB Hi3861L POR 3. WIFI UART GPIO3/GPIO4 TX GPIO_3 RX GPIO4 UART UART 900Kbps-2Mbps UART GPIO3/4 LED (

) FN-LINK TECHNOLOGY LIMITED 20 Proprietary & Confidential Information 4. WIFI GPIO3/GPIO5/GPIO7/GPIO14 WIFI 5. GPIO7 GPIO GPIO ADC 6. WIFI IO VDDIO VDDIO 3.3V WIFI IO 3.3V 3161A-SL or MCU or UART1 PIR PIR_OUT PIR_OUT PIR_IN PIR_IN L6 10pF WL_ANT C49 NP C50 NP ADC or GPIO GPIO SDIO INT 3.3V C48 4.7uF 1 2 3 4 5 6 7 8 9 GND WL_ANT GND NC NC GPIO8 NC VBAT 10 11 NC NC HOST2DEV_WAKE GPIO06 button reset or UART0 LED LED 4 4 3 4 2 4 1 4 0 4 9 3 8 3 7 3 6 3 5 3 4 3 C N C N C N C N C N C N D N G T U O _ R P I C D A X R _ G O L _ 0 T R A U X T _ G O L _ 0 T R A U E K A W _ T S O H 2 V E D T S R _ L W X R _ T R A U X T _ T R A U G P I O 0 7 G P I O 0 4 G P I O 0 3 G P I O 0 5 33 32 31 30 29 28 27 26 25 24 23 GND NC GND NC NC NC NC NC NC RTC_CLK RTC_CLK GPIO01 GPIO00 2 0 O I P G 9 0 O I P G 0 1 O I P G 1 1 O I P G 2 1 O I P G 3 1 O I P G 4 1 O I P G t p u r r e t i n _ D S N E _ W O P 2 _ A T A D _ O I D S 3 _ A T A D _ O I D S D M C _ A T A D _ O I D S K L C _ A T A D _ O I D S 0 _ A T A D _ O I D S 1 _ A T A D _ O I D S D N G C N O I D D V 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 1 0 2 1 2 2 2 N O R W P 2 0 O P G I 9 0 O P G I 0 1 O P G I O I D D V I G P O 1 4 22R 22R 22R R36 R37 R38 I2C ADC battery charge status charge SDIO_D0 SDIO_CLK SDIO_CMD USB VDDIO C51 4.7uF V D D I O R44 NC/47K PWRON SDIO_INT C54 NC/10pf HOST PWRON SD_INT SDIO_D0 SDIO_CLK SDIO_CMD 7 Ordering Information Part No. Description FG3161ASLX-00 FG3161ASLX-01 Hi3861L, b/g/n Wi-Fi, 1T1R, 12X12mm, SDIO, PCB V1.0 Halogen Free,with shielding. Halogen Free,no shielding. Hi3861L, b/g/n Wi-Fi, 1T1R, 12X12mm, SDIO, PCB V1.0 8 The Key Material List Main Inductor 2.2uH ,20%DCR=0.125ohmIsat=1.5AIrms=1.5A 2016 MPIE201610-2R2M-LF) Main Shielding 3161A-SL-V1.0 Shielding cover, no insulation glue, no FN-LINK TECHNOLOGY LIMITED 21 Proprietary & Confidential Information 3161A-SL cover positioning foot (material: copper) Xintai 2520 40MHZ,13.8PF,7ppm,SR:50 ,E2SB40E00000GE

(HOSONIC) 2520 Main Crystal Alt. Crystal Main RTC Main Chipset 9 Power on Sequence 40MHz 15pF 10ppm -40~85 Q40000V024 12.5PF 32.768KHZ 3215 SF32K32768D31T-12.5 () Hi3861LRNIV100 WiFi IoT Soc,802.11b/g/n, WiFi Mesh, 2M Flash, SDIO,UART,QFN32, 5x5mm () 20PPM -40~85 C VCC / VDDIO supreme electrical order requirements In the process of power up, GPIO02 internal weak pull low ,the 40MHz crystal is selected.. 10 Design Attention 1. GPIO02 is the interrupt signal of SDIO, It also can be configured as dev wake host function. 2. GPIO8 can be setting as SDIO interrupt function. 3. PMU_PWRON is enable pin of the module. Default is pull high. 4. Wake function may not supported with recently applications, for power saving please using POWER EN pin enable or disable the module. 11 Recommended Reflow Profile Referred to IPC/JEDEC standard. Peak Temperature : <250C FN-LINK TECHNOLOGY LIMITED 22 Proprietary & Confidential Information Number of Times : 2 times 3161A-SL 12 Packing Information 12.1 Reel A roll of 1500pcs FN-LINK TECHNOLOGY LIMITED 23 Proprietary & Confidential Information 3161A-SL 12.2 Carrier Tape Detail 12.3 Packaging Detail FN-LINK TECHNOLOGY LIMITED 24 Proprietary & Confidential Information 3161A-SL 12.4 Moisture sensitivity The Modules is a Moisture Sensitive Device level 3, in according with standard IPC/JEDEC J-STD-020, take care all the relatives requirements for using this kind of components. Moreover, the customer has to take care of the following conditions:

a) Calculated shelf life in sealed bag: 12 months at <40C and <90% relative humidity

(RH). b) Environmental condition during the production: 30C / 60% RH according to IPC/JEDEC J-STD-033A paragraph 5. c) The maximum time between the opening of the sealed bag and the reflow process must be 168 hours if condition b) IPC/JEDEC J-STD-033A paragraph 5.2 is respected d) Baking is required if conditions b) or c) are not respected e) Baking is required if the humidity indicator inside the bag indicates 10% RH or more FN-LINK TECHNOLOGY LIMITED 25 Proprietary & Confidential Information

Federal Communications Commission (FCC) Declaration of Conformity FCC Caution: Any changes or modications not expressly approved by the party re-

sponsible for compliance could void the users authority to operate this equipment. This device complies with Part 15 of the FCC Rules. Operation is subject to the fol-

lowing two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. This device and its antenna(s) must not be co-located or operating in conjunction with any other antenna or transmitter. 15.105 Information to the user. (b) For a Class B digital device or peripheral, the instructions furnished the user shall include the following or similar statement, placed in a prominent lo-

cation in the text of the manual: Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment o and on, the user is encour-

aged to try to correct the interference by one or more of the following measures:

Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit dierent from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. This equipment complies with FCC radiation exposure limits set forth for an uncon-

trolled environment. This equipment should be installed and operated with mini-

mum distance 20 cm between the radiator and your body. Radiation Exposure Statement: This equipment complies with FCC radiation expo-

sure limits set forth for an uncontrolled environment. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. The availability of some specic channels and/or operational frequency bands is country dependent and rmware programmed at the factory to match the intended destina-

tion. The rmware setting is not accessible by the end user. The nal end product must be labeled in a visible area with t he following: Con-

tains Transmitter Module 2AATL3161ASL This radio module must not be installed to co-locate and operating simultaneously with other r adios in host system, additional testing and equipment authorization may be required t o operating simultaneously with other radio. This LMA have RF shielding and is tested and approved as standalone conguration, additional evaluation may be required for any system integrated this radio module. FPC Antenna Type, with the maximum 2dBi indicated. Integration Instructions for host product manufacturers The following items are submitted in support of application for Modular Transmitter FCC ID as noted above as required by the FCC KDB 996369 D03 OEM Manual v01. These items are provided as integration instructions for host product manufacturers

(e.g., OEM instruction manual) to use when integrating a module in a host product. Any requirements that are not applicable to the Module are as indicated below. Summary of requirements and Checklist. Refer to the KDB for description of the complete requirements;

KDB Ref Sect Requirements of KDB Notes:

996369 D03 2.2 List of applicable FCC rules CFR 47 FCC PART 15 SUBPART C has been investigated. It is applicable to the modular Transmitter 2.3 Summarize the specific This module is stand-alone modular. If the end operational use conditions product will involve the Multiple simultaneously 2.4 2.5 2.6 Limited module procedures Not applicable Not applicable Trace antenna designs RF exposure considerations This equipment complies with FCC radiation 2.7 Antennas This radio transmitter 2AATL3161ASL has been transmitting condition or different operational conditions for a stand-alone modular transmitter in a host, host manufacturer have to consult with module manufacturer exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body. approved by Federal Communications Commission to operate with the antenna types listed below, with the maximum permissible gain indicated. Antenna types not included in this list that have a gain greater than the maximum gain indicated for any type listed are strictly prohibited for use with this device. Operating frequency band: 2412-2462MHz Antenna type: FPC Maximum Antenna gain: 2dBi The final end product must be labeled in a visible 2.8 Label and compliance information area with the following" Contains FCC ID: 2AATL3161ASL. 2.9 Information on test modes Host manufacturer is strongly recommended to and additional testing confirm compliance with FCC requirements for the requirements transmitter when the module is installed in the host. 2.10 Additional testing, Part 15 Host manufacturer is responsible for compliance of Subpart B disclaimer the host system with module installed with all other applicable requirements for the system such as Part 15 B.

HUNAN FN-LINK TECHNOLOGY LIMITED Federal Communications Commission Equipment Authorization Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date:

Subject; Modular Transmitter Application Company name: HUNAN FN-LINK TECHNOLOGY LIMITED FCC ID: 2AATL3161ASL Dear Sir/Madam, This letter includes the FCC application requirements for Modular Transmitter Approval Request for;-

FCC KDB 996369 D01 Module Certification Guide v02; and FCC KDB 996369 D03 OEM Manual v01 In accordance with 47CFR 15.212 Modular Transmitters and KDB 996369 D01 Module Equip Auth Guide v02. FCC ID 2AATL3161ASL has been examined against the following requirements. Requirement per 15.212 and KDB 996369 D01 The radio elements must have the radio frequency circuitry shielded. Physical components and tuning capacitor(s) may be located external to the shield, but must be on the module assembly. The module must have buffered modulation/data inputs to ensure that the device will comply with Part 15 requirements with any type of input signal. 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), per 15.203, 15.204(b), 15.204(c), 15.212(a), 2.929(b). The module must demonstrate compliance in a stand-alone configuration. The module must be labeled with its permanently affixed FCC ID label, or use an electronic display (see KDB Publication 784748). The module must comply with all specific rules applicable to the transmitter, including all the conditions provided in the integration instructions by the grantee. The module must comply with RF exposure requirements Explanation from Grantee

(do not write yes/no, but explain why product complies/how it is achieved) The module has a shield, and the components are located in the shield The module meets the requirements The module meets the requirements The module has a unique antenna connector and is sold with a specific antenna The modified module can work in a stand-

alone configuration. The module meets the requirements Please refer to the label The module meets the requirements Please check the RF Exposure test report The module meets the requirements FCC Modular Approval Request Rev 3.0 HUNAN FN-LINK TECHNOLOGY LIMITED Requirements of KDB 996369 D03 Integration Instructions for host product manufacturers The following items are submitted in support of application for Modular Transmitter FCC ID as noted above as required by the FCC KDB 996369 D03 OEM Manual v01. These items are provided as integration instructions for host product manufacturers (e.g., OEM instruction manual) to use when integrating a module in a host product. Any requirements that are not applicable to the Module are as indicated below. Summary of requirements and Checklist. Refer to the KDB for description of the complete requirements;

KDB User Manual Page Number reference Ref Sect 3161A-SL_User Manual_2 Page 2 3161A-SL_User Manual_2 Page 2 NA 3161A-SL_User Manual_2 Page 2 3161A-SL_User Manual_2 Page 2 3161A-SL_User Manual_2 Page 2 3161A-SL_User Manual_2 Page 2 3161A-SL_User Manual_2 Page 2 3161A-SL_User Manual_2 Page 2 Information on test modes and additional testing requirements Additional testing, Part 15 Subpart B disclaimer Limited module procedures Trace antenna designs Summarize the specific operational use conditions Label and compliance information RF exposure considerations List of applicable FCC rules Antennas 2.4 2.5 2.10 2.8 2.7 2.6 2.9 2.3 2.2 Date: October 22, 2020 Name: Wayne Zou Title: Manager Signature of applicant FCC Modular Approval Request Rev 3.0

HUNAN FN-LINK TECHNOLOGY LIMITED Agent Authorization Company: HUNAN FN-LINK TECHNOLOGY LIMITED Address: No. 8Litong RoadLiuyang Economic Development ZoneLiuyang City, Hunan Province, China Product Name: WIFI Module Model Number(s): 3161A-SL Product Description: WIFI Module 3161A-SL We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature:

Date: 2020/10/22 Name:

Wayne Zou Title:

Manager Company: HUNAN FN-LINK TECHNOLOGY LIMITED

HUNAN FN-LINK TECHNOLOGY LIMITED Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2020.10.22 Subject; Request for Confidentiality FCC ID: 2AATL3161ASL To Whom It May Concern, Pursuant to the provisions of the Commissions rules Title 47 Sections 0.457 and 0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Parts List Operational Description Tune-up Procedure External Photos Test Setup Photos Internal Photos User Manual In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR 2.803 and the importation rules in Title 47 CFR 2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s);

OR For 45 days, pursuant to Public Notice DA 04-1705. For 180 days pursuant to KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature:

Name: Wayne Zou Title: Manager