FCC ID: 2AFOS-WT5010-S2 BLE Module

Wireless-Tag Technology Co., Ltd. V1.0.1 WT5010-S2 Datasheet V1.0.1 December 11, 2020 Wireless-Tag Technology Co., Ltd. 2020 Wireless-Tag Technology Co., Ltd. All rights reserved. http://www.wireless-tag.com Wireless-Tag Technology Co., Ltd. V1.0.1 About this document This document provides users with WT5010-S2 specifications. Please visit Wireless-Tags official website to download the latest version of the document. Document version Revision history Please go to the document revision history page to view the revisions of the document. Disclaimer and copyright notice Information in this paper, including URL references, is subject to change without prior notice. This document is provided as is with no warranties whatsoever, including any warranty of merchantability, non-infringement, fitness for any particular purpose, or any warranty otherwise arising out of any proposal, specification or sample. All liability, including liability for infringement of any patent rights, relating to use of information in this document is disclaimed. No licenses, either express or implied, by estoppel or otherwise, to any intellectual property rights are granted herein. All trade names, trademarks and registered trademarks mentioned in this document are property of their respective owners, and are hereby acknowledged. Copyright 2020 Wireless-Tag Technology Co., Ltd. All rights reserved. Statement Due to product version upgrade or other reasons, the contents of this manual may be changed. Wireless-Tag Technology Co., Ltd reserves the right to modify the contents of this manual without any notice or prompt. This manual is only used as a guide. Wireless-Tag Technology Co., Ltd makes every effort to provide accurate information in this manual, but it does not guarantee that the contents of the manual are completely free of errors. All statements, information and suggestions in this manual do not constitute any express or implied guarantee. I Wireless-Tag Technology Co., Ltd. V1.0.1 Document Revision History No. Version Changes Change (+ / -) description Author Date 1 2 V1.0.0 V1.0.1 C M First release Fiona Nov 17, 2020 Modified BLE name Fiona Dec 14, 2020

*Changes: CCreate, AAdd, MModify, DDelete II Wireless-Tag Technology Co., Ltd. V1.0.1 Contents 1 Overview........................................................................................................................................................1 2 Chip Dimensions............................................................................................................................................3 3 Pin Definition.................................................................................................................................................4 3.1 Pin Layout...........................................................................................................................................4 3.2 Pin Description................................................................................................................................... 4 4 Functional Description...................................................................................................................................6 4.1 Direct Memory Access Controller (DMA).........................................................................................6 4.2 Independent Watchdog(IWDG)......................................................................................................... 6 4.3 Window Watchdog(WWDG)............................................................................................................. 7 4.4 General Purpose and Alternate Function(GPIO and AFIO).............................................................. 7 4.5 Peripheral Interconnection..................................................................................................................8 4.6 Elliptic Curve Cryptography(ECC).................................................................................................... 8 4.7 Encryption(AES/DES)........................................................................................................................8 4.8 True Random Number Generator(TRNG)......................................................................................... 9 4.9 Calculating Accelerator(CALC).........................................................................................................9 4.10 Advanced Timer(ADTIM)................................................................................................................9 4.11 General-Purpose Timer(GPTIMC).................................................................................................10 4.12 Basic Timer(BSTIM)......................................................................................................................11 4.13 Low-Power Timer(LPTIM)............................................................................................................ 12 4.14 Analog-to-Digital Converter(ADC)............................................................................................... 12 4.15 Real Time Clock(RTC)...................................................................................................................13 4.16 Inter-Integrated Circuit Interface(I2C)........................................................................................... 14 4.17 Serial Peripheral Interface 1(LSSPI).............................................................................................. 14 4.18 Serial Peripheral Interface 2(SPI2).................................................................................................15 4.19 Universal Asynchronous Receiver Transmitter(UART)................................................................16 4.20 Audio Interface (PDM)...................................................................................................................18 4.21 BLE................................................................................................................................................. 18 2020 Wireless-Tag Technology Co., Ltd. All rights reserved. http://www.wireless-tag.com III Wireless-Tag Technology Co., Ltd. V1.0.1 1 Overview BLE5.0 / BLE5.1 Support 125Kbps/500Kbps/1Mbps Receiving sensitivity: -99.7dBm@1Mbps

-105dBm@125Kbps Transmit power: +12 dBmMax. Link gain: 117dBm@125KbpsMax. Support Single-Ended Antenna Output BLE MESH Support BLE SIG Mesh Support private MESH MCU core 32-bit CPU core Frequency up to 64MHZ Max. 64KB Data SRAM memory Max. 512KB Data Flash memory Support two-wire debugging protocol System power consumption RX mode: 4.5mA @3.3V TX mode: 4.3 mA @3.3V 0dBm Deep sleep mode: 1.1ARTC wake-up+GPIO wake-up ShutDown mode: 700nAGPIO wake-up Power, reset Main power domainVDD33 Operating voltage range: 1.7VVDD333.6 V POR, PDR, PVD Clock External high-speed crystal oscillator: 16MHz Internal high-speed RC oscillator: 24 MHz External low-speed crystal oscillator: 32.768KHz Internal low-speed RC oscillator: 32.768KHz System peripherals 2020 Wireless-Tag Technology Co., Ltd. All rights reserved. http://www.wireless-tag.com 1 Wireless-Tag Technology Co., Ltd. V1.0.1 DMA: support 8 multiplex channels Watchdog timer: IWDG and WWDG Peripheral interconnection PIS System tick timer Security and computing acceleration unit ECC elliptic curve cryptography (256) AES advanced encryption (256/192/128) T/DES advanced encryption (192/128/64) True random number generator (TRNG) Calculating accelerator (CALC) Timer dead-zone complementary One advanced 16-bit timer (ADTIM), support 4-channel PWM, 3 of which support One general-purpose 32-bit timer A (GPTIMA), support 4-channel PWM One general-purpose 16-bit timer B (GPTIMB), support 4-channel PWM One general-purpose 16-bit timer C (GPTIMC), support 2-channel PWM, one of Support high precision hardware temperature compensation which supports dead zone complementary One basic timer (BSTIM) One low power timer (LPTIM) RTC ( Real time clock ) ADC ( Analog to digital conversion ) 12-bit high precision SAR ADC Support up to 9 external channels Support 3 internal channels Built-in temperature sensor 1/8, 1/4, 1/2, 3/8VDD Internal reference voltage of 1.4V Communication interface 2 x I2C (support bus arbitration) 2 x SPI Audio interface 3 x UART (support ISO7816, LIN, IrDA, etc.) 2 x PDM, support digital MIC 1 x I2S 2020 Wireless-Tag Technology Co., Ltd. All rights reserved. http://www.wireless-tag.com 2 Wireless-Tag Technology Co., Ltd. V1.0.1 General-purpose IO 2 Chip Dimensions Figure 1 Chip Dimensions 2020 Wireless-Tag Technology Co., Ltd. All rights reserved. http://www.wireless-tag.com 3 Wireless-Tag Technology Co., Ltd. V1.0.1 3 Pin Definition 3.1 Pin Layout Figure 2 Top View 3.2 Pin Description The module has a total of 24 pins. See Table 1 for specific descriptions. Table 1 Pin Definition Pin No. Pin Name 1 2 3 4 5 6 B12 B13 B14 B15 A00 A01 Description GPIO/ADC Channel 0 GPIO/ADC Channel 1 GPIO (BOOT pin, high level is required when programming) GPIO/Wake-up GPIO/ADC Channel 4/Wake-up GPIO/ADC Channel 5 2020 Wireless-Tag Technology Co., Ltd. All rights reserved. http://www.wireless-tag.com 4 Wireless-Tag Technology Co., Ltd. Pin No. Pin Name V1.0.1 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 GND GND A02 A07 A08 A09 A13 A14 A15 B00 VCC B01 B05 B06 B08 B09 B10 RST Description Module power negative Module power negative GPIO/ADC Channel 6 GPIO/Wake-up GPIO GPIO GPIO GPIO GPIO GPIO GPIO GPIO GPIO GPIO Module power positive 3.3V GPIO(debug interface data by default) GPIO(debug interface clock by default) Reset input pin, active low 2020 Wireless-Tag Technology Co., Ltd. All rights reserved. http://www.wireless-tag.com 5 Wireless-Tag Technology Co., Ltd. V1.0.1 4 Functional Description 4.1 Direct Memory Access Controller (DMA) The Direct memory access (DMA) is used to provide high-speed data transfer between peripheral and memory or between memory and memory, without intervention from CPU, data can be transferred quickly by DMA, which frees up CPU resources for other operations. The features are described as follows:

Support 8 independent DMA channels Each DMA channel has an independent handshake signal The priority of each DMA channel is programmable Each priority arbitration uses a fixed priority determined by the DMA channel number Support various transfer modes Memory to memory Memory to peripheral Peripheral to memory Support various DMA cycle modes Support various DMA transfer data bit width Each DMA channel can access the primary and alternate channel controlled data structure All channel controlled data is stored in system memory in little endian format The number of data transferred in a single DMA cycle can be programmed (from 1 to 1024) The transfer address increment can be greater than the data width It can indicate errors on the bus 4.2 Independent Watchdog(IWDG) The independent watchdog IWDG can be used to detect software and hardware abnormalities, such as the main clock stops oscillating, the program becomes out of control and no longer refreshes the watchdog. The features are described as follows:

Free running down counter Writing to the IWDG_RLR register will reload the watchdog After the watchdog is activated, a reset occurs when the counter reaches 0 IWDG interrupt can wake up from sleep mode 0 and sleep mode 2 2020 Wireless-Tag Technology Co., Ltd. All rights reserved. http://www.wireless-tag.com 6 Wireless-Tag Technology Co., Ltd. V1.0.1 4.3 Window Watchdog(WWDG) Window Watchdog(WWDG)will generate a WWDG reset if it is refreshed too early or too late. It can be used to detect whether the software fails to refresh the watchdog or it refreshes the watchdog in the refresh prohibited area to prevent the program from running into an uncontrollable state. The features are described as follows:

Support setting a watchdog refresh prohibited area Set a watchdog refresh prohibited period through WIN When WIN register is set to 11, refreshing the watchdog in any area will not generate a reset. Refreshing the watchdog in the refresh prohibited area will generate a WWDG reset. WWDG interrupt occurs after the watchdog refresh prohibited area WWDG interrupt can be used as a watchdog refresh request WWDG overflow length can be set It can be set by WWDG_RLR register WWDG reset generated on overflow WWDG interrupt can be used as a watchdog refresh request 4.4 General Purpose and Alternate Function(GPIO and AFIO) Each GPIO port contains 16 independent pins, which can be individually configured as input or output. Each pin can be additionally configured as an open-drain output mode or a filtered input mode, and the drive strength of each pin can be selected when configured as an output pin. GPIO pins can be multiplexed as peripheral function ports, such as PWM output port or UART communication port, and each peripheral can be multiplexed onto multiple pins. The GPIO port supports up to 13 asynchronous external interrupts, which can be configured to any IO pin. And the GPIO port supports triggering other peripherals through PIS. The features are described as follows:

It can be configured as input or output Output mode Push-pull/open drain Pull-up/pull-down Input mode Floating Pull-up/pull-down 2020 Wireless-Tag Technology Co., Ltd. All rights reserved. http://www.wireless-tag.com 7 Wireless-Tag Technology Co., Ltd. Analog port Support reset/set of port output data, bitwise operation Support multiplexing as peripheral functions port Configurable output drive capacity: four drive capacity options Support 16 external input interrupts Support write protection of port configuration V1.0.1 4.5 Peripheral Interconnection PIS is used as a bridge interface for the interconnection of peripherals in the microcontroller. The use of PIS can achieve the mutual triggering, control and automation of the peripherals, improve the real-time performance and rapid response ability of the system, avoid occupying excessive CPU resources and simplify software work to provide convenience for various applications. The features are described as follows:

Support up to 8 PIS channel selection Support synchronous and asynchronous channel selection Support signal effective edge selection Support channel output to pin 4.6 Elliptic Curve Cryptography(ECC) is an asymmetric encryption algorithm based on the Elliptic Curve Cryptography, ECC for short, mathematical theory of elliptic curve. Compared with RSA, ECC has the advantage of using shorter keys to achieve security equivalent to or higher than RSA. 4.7 Encryption(AES/DES) The hardware encryption module is mainly used to encrypt or decrypt data by hardware, and supports AES and DES standards. AES (Advanced Encryption Standard) is the latest block symmetric cipher algorithm, compatible with the Advanced Encryption Standard (AES) specified by the Federal Information Processing Standards Publication (FIPS PUB 197, November 26, 2001). DES (Data Encryption Standard) is a widely used symmetric encryption algorithm, compatible with the Data Encryption Standard (DES) and Triple DES (TDES) specified in the Federal Information Processing Standards Publication (FIPS PUB 46-3, October 25, 1999) , and complies with the American National Standards Institute (ANSI) 9.52 standard. The features are described as follows:

2020 Wireless-Tag Technology Co., Ltd. All rights reserved. http://www.wireless-tag.com 8 Wireless-Tag Technology Co., Ltd. V1.0.1 Suitable for AES, DES and TEDS encryption and decryption operations AES Support 128/192/256-bit keys Support ECB/CBC modes Support 1/8/16/32-bit data exchange DES(TDES) Support ECB/CBC modes Support 64/128/192-bit keys Support 4x32-bit initialization vector (IV) used in CBC mode Support 1/8/16/32-bit data exchange Support Direct Memory Access (DMA) (used to transfer data and read processed data) Support to generate CPU interrupt requests 4.8 True Random Number Generator(TRNG) True random number generator (TRNG) can produce 1-bit serial true random numbers or 8/16/32-bit parallel true random numbers. The features are described as follows:

Support programmable random bit width Support programmable seed value Support random correction mode Support random sequence error detection 4.9 Calculating Accelerator(CALC) The calculating accelerator (CALC) can perform calculation acceleration of square root and division. The features are described as follows:

Support up to 32-bit unsigned square root operation Support division of up to 32-bit signed and unsigned numbers Support the use of DMA write data to perform calculating operations 4.10 Advanced Timer(ADTIM) The advanced-control timer (ADTIM) consists of a 16-bit auto-load counter driven by a programmable Prescaler. It may be used for a variety of purposes, including measuring the pulse widths of input signals

(input capture), or generating output waveforms (output compare, PWM, complementary PWM with 2020 Wireless-Tag Technology Co., Ltd. All rights reserved. http://www.wireless-tag.com 9 Wireless-Tag Technology Co., Ltd. V1.0.1 dead-time insertion). Pulse widths and waveform periods can be modulated from a few microseconds to several milliseconds using the timer Prescaler and the RCC clock controller Prescaler. The advanced-control timers (ADTIM), general-purpose timers (GPTIMA, GPTIMB, GPTIMC) and basic timers (BSTIM) are completely independent and do not share any clock sources. They can be synchronized together as well. The features are described as follows:

16-bit up, down, up/down auto-reload counter. 16-bit programmable Prescaler allowing dividing (on the fly) the counter clock frequency by any factor between 1 and 65536. Up to 4 independent channels for:

Input Capture Output Compare PWM generation (Edge and Center-aligned Mode) One-pulse mode output Synchronization circuit can control the timer with external signals and interconnect several timers. Interrupt/DMA request is generated when the following events occur:

Update:

counter overflow/underflow, counter initialization

(by software or internal/external trigger) Trigger events (counter start, stop, initialization or count by internal trigger) Input capture (capture register) Output compare (count register paired with compare register) Support incremental (quadrature) encoder and Hall sensor circuits for positioning purposes. Trigger input for an external clock or cycle-by-cycle current management 4.11 General-Purpose Timer(GPTIMC) The general-purpose timer (GPTIMC) consists of a 16-bit auto-reload counter driven by a programmable Prescaler. It may also be used for multiple purposes, including measuring the pulse lengths of input signals (input capture), or generating output waveforms (output compare, PWM, complementary PWM with dead-time insertion). Pulse lengths and waveform periods can be modulated from a few microseconds to several milliseconds by using the timer Prescaler and the APB clock controller Prescaler. The advanced-control timers (ADTIM1), general-purpose timers (GPTIMA1, GPTIMB1, GPTIMC1) and 2020 Wireless-Tag Technology Co., Ltd. All rights reserved. http://www.wireless-tag.com 10 Wireless-Tag Technology Co., Ltd. V1.0.1 basic timers (BSTIM1) are completely independent and do not share any clock sources. 16-bit programmable Prescaler allows the counter clock frequency to be divided by any The features are described as follows:

16-bit auto-reload up-counter factor between 1 and 65536 (on the fly) Up to 2 independent channels Input capture Output compare PWM generation (Edge-aligned and Center-aligned modes) One-pulse mode output Complementary output programmable dead-time register Synchronization circuit can control the timer with external signal and interconnect several timers The repeat counter is used to update the timing register and only works after the definition number of the counter period Pause input to put timer output signal in reset state or known state Interrupt/DMA generation on the following events:

Update: Counter overflow/underflow, counter initialization (through software or internal/external trigger) Trigger event (counter start, stop, initialization or count by internal/external trigger) Input capture (capture register) Output compare (count register paired with compare register) Brake signal input Trigger input for an external clock or cycle-by-cycle current management 4.12 Basic Timer(BSTIM) The basic timer consists of a 16-bit auto-reload counter driven by a programmable Prescaler. It may be used for a variety of purposes, including measuring the pulse lengths of input signals (input capture) or generating output waveforms (output compare, PWM). Pulse lengths and waveform periods can be modulated from a few microseconds to several milliseconds by using the timer Prescaler and the APB clock controller Prescaler. The advanced-control timers (ADTIM), general-purpose timers (GPTIMA, GPTIMB, GPTIMC) and basic timers (BSTIM) are completely independent and do not share any clock source. The features are described as follows:

16-bit auto-reload up-counter 2020 Wireless-Tag Technology Co., Ltd. All rights reserved. http://www.wireless-tag.com 11 Wireless-Tag Technology Co., Ltd. V1.0.1 16-bit programmable Prescaler used to divide (on the fly) the counter clock frequency by Synchronization circuit can control the timer with external signal and interconnect several any factor between 1 and 65536 timers Interrupt/DMA request is generated when the following event occurs:

Update: Counter overflow/underflow, counter initialization (by software or internal/external trigger) Trigger input for an external clock or cycle-by-cycle current management 4.13 Low-Power Timer(LPTIM) The LPTIM is a 16-bit timer that is designed for low-power applications. Thanks to its multiple clock sources, the LPTIM supports the use of external input as a clock source, and can also count when the internal clock source is stopped. The features are described as follows:

16-bit up-counter Clock sources 3-bit Prescaler with 8 possible dividing factors (1,2,4,8,16,32,64,128) Internal clock sources: HSE, HIS, LSI, LSE, HSE, PLL External clock source: external port input 16-bit ARR auto-reload register 16-bit compare register Continuous or one-shot mode optional Selectable software or hardware trigger Programmable filter Configurable output: Pulse, PWM, Flip Configurable I/O polarity 4.14 Analog-to-Digital Converter(ADC) The ADC module is a 12-bit precision successive approximation analog-to-digital converter. It has up to 8 multiplexed channels allowing it to measure 8 external signals, two internal signals and BVAT voltage signals. The A/D conversion of the various channels can be performed in a single, continuous, scan, or discontinuous mode. The result of the ADC is stored in a left-aligned or right-aligned 16-bit data register. The analog watchdog feature allows the application to detect if the input voltage goes outside the user-defined high or low thresholds.The analog watchdog feature allows the application to detect if the input voltage goes outside the user-defined high or low thresholds. 2020 Wireless-Tag Technology Co., Ltd. All rights reserved. http://www.wireless-tag.com 12 Wireless-Tag Technology Co., Ltd. The features are described as follows:

V1.0.1 Configurable conversion accuracy (6/8/10/12) Interrupt generation at the end of conversion, the end of injected conversion, analog watchdog or overrun events. Support single and continuous conversion modes Scan mode for automatic conversion of channel 0 to channel n Configurable data alignment Programmable sampling time of each channel External trigger option to configure polarity for both regular and injected conversion Support discontinuous sampling mode Configurable conversion clock divider DMA request generation during regular channel conversion 4.15 Real Time Clock(RTC) Real Time Clock (RTC) can provide users with accurate time and date information. These keywords are stored in the RTC control register in BCD format to provide users with the alarm function. There are two RTC CLK sources for users to choose from, which are an external 32.768K Hz crystal oscillator and an internal 32.768K Hz RC oscillator. When the MCU is in low power consumption mode, the RTC can still continue to provide accurate time information. The features are described as follows:

Support calendar display: year, month, day Support time display: week, hour, minute, second The calendar and time are stored in BCD format Support leap year detection capability Support users to set the RTC counter correction function Support users to set the alarm interrupt function Support rollover interrupt of year, month, day, week, hour, minute, and second Support MCU to keep counting in sleep mode Support users to configure the sleep counter Support a sleep counting up to 16777216 seconds (194 days). Support a sleep counting as short as 1/16 second. Support to detect whether the calendar and time have been cleared. 2020 Wireless-Tag Technology Co., Ltd. All rights reserved. http://www.wireless-tag.com 13 Wireless-Tag Technology Co., Ltd. V1.0.1 4.16 Inter-Integrated Circuit Interface(I2C) The I2C (Inter-chip) bus interface connects the microcontroller and the serial I2C bus. It provides the multi-master capability and controls all I2C bus-specified sequencing, protocol, arbitration and timing. It supports standard mode, fast mode and super ultra-fast mode. At the same time, it is compatible with SMBus (System Management Bus) and PMBus (Power Management Bus). DMA can be used to reduce the burden on the CPU. Multiple 7-bit slave addressing (2 addresses, one of which can be masked) The features are described as follows:

Slave mode and master mode Multi-master mode Standard mode (up to 100KHz) Fast mode (up to 400KHz) Ultra-fast mode (up to 1MHz) 7-bit and 10-bit addressing modes All 7-bit addressing response mode Broadcast call Programmable setup and hold time Optional clock stretching Programmable digital noise filter Transmit/receive FIFOs of depth 8 DMA function SMBus specification Generation and verification hardware PEC (Packet Error Checking) , with ACK control Command and data response control Support address resolution protocol (ARP) Master and device supporting SMBus alert Timeout and idle state detection Compatible with PMBus version 1.1 specification 4.17 Serial Peripheral Interface 1(LSSPI) SPI1 is a full-duplex master/slave synchronous serial interface. The master processor accesses data, control and status information on LSSPI through a bus interface. LSSPI is connected to a DMA controller through a set of DMA signals. LSSPI can be set to one of the two operating modes: serial master mode or serial 2020 Wireless-Tag Technology Co., Ltd. All rights reserved. http://www.wireless-tag.com 14 Wireless-Tag Technology Co., Ltd. V1.0.1 slave mode. LSSPI can be connected to any serial master or serial slave peripheral device using one of the following interfaces. The features are described as follows:

Support SPI serial peripheral interface Support SSP protocol Support national semiconductor ray 4.18 Serial Peripheral Interface 2(SPI2) The SPI/I2S interface can be used to communicate with external devices based on the SPI protocol and the I2S audio protocol. SPI or I2S mode is selected by software. SPI mode is selected by default after device reset. Serial Peripheral Interface (SPI) protocol supports serial communication with external devices in half-duplex, full-duplex and simplex synchronization modes. This interface can be configured as master mode, in this case, it provides communication clock (SCK) to external slave device. The interface can also be operated in multiple configurations. I2S audio protocol, also a synchronous serial communication interface, uses three external signals. It supports four different audio standards, including Philips' I2S standard, MSB and LSB alignment standards and PCM standard. It can achieve half-duplex communication in master-slave mode. When I2S is used as a master device, it can provide a communication clock to an external slave device. The features are described as follows:

SPI main features Master device and slave device modes Three-wire full-duplex synchronous transmission Two-wire half-duplex synchronous transmission (two-way data line) Two-wire simplex synchronous transmission (one-way data line) 8-bit to 16-bit data size selection Multiple modes capability 8-bit master mode baud rate divider Slave mode frequency up to fpclk/2 dynamic changes of master/slave mode operation Programmable clock polarity and phase High-order or low-order can be set In both master and slave modes, you can manage NSS by hardware or software:

Special sending and receiving status flags, all support interrupt triggering SPI bus busy status flag 2020 Wireless-Tag Technology Co., Ltd. All rights reserved. http://www.wireless-tag.com 15 Wireless-Tag Technology Co., Ltd. Support SPI Motorola mode V1.0.1 Hardware CRC can achieve reliable communication CRC value can be transmitted as the last byte of TX mode CRC automatically performs an error check to the last received byte. Support Rx and TxFIFO, depth is 16 8-bit linear programmable frequency divider to achieve accurate audio sampling Fixed data frame of audio channel is 16-bit (16-bit data frame) or 32-bit (16-bit, 24-bit, Underflow flag for slave transmission mode and overflow flag for receiving function 16-bit transmit and receive registers, with one register at each end of the channel Support DMA transfer Support SPI TI mode I2S features Simplex communication (only send or receive) Master or slave operation frequency (from 8kHz to 968kHz) The data format is 16-bit, 24-bit or 32-bit 32-bit data frame) Programmable clock polarity (steady state)

(master or slave) I2S protocol supported:

I2S Philips standard MSB alignment standard (left alignment) LSB alignment standard (right alignment) 16-bit data frame extended to 32-bit channel frame) Data direction is always MSB first Support sending and receiving DMA (16 bits wide) times FS (where FS is the audio sampling frequency) Support TX and RX FIFO, depth is 16 Provides 2-channel external clock inputs The main clock can be output to an external audio component. The rate is fixed at 256 PCM standard (16-bit channel frame with long or short frame synchronization or 4.19 Universal Asynchronous Receiver Transmitter(UART) The Universal Asynchronous Receiver Transmitter (UART) offers a flexible means of full-duplex data exchange with external equipment requiring an industry-standard NRZ asynchronous serial data format. 2020 Wireless-Tag Technology Co., Ltd. All rights reserved. http://www.wireless-tag.com 16 Wireless-Tag Technology Co., Ltd. V1.0.1 The UART offers a wide range of baud rates using a fractional baud rate generator. UART supports asynchronous communication and half-duplex single-wire communication. It also supports the LIN (local interconnection network), Smart Card Protocol and IrDA (infrared Data Association) SIR also supports multiprocessor ENDEC specifications, communication. High-speed data communication is possible by using the DMA for multibuffer settings. and modem operations

(CTSn/RTSn). It The features are described as follows:

Full duplex asynchronous communications 16-byte receive and transmit FIFO Compatible with 16C550 standard Programmable receiving buffer trigger point Support independent baud rate programmable for each channel Support automatic baud rate detection 12 interrupt sources Can use DMA Buffering the received/transmitted bytes in the reserved SRAM using DMA Built-in fractional baud rate generator covering wide range of baud rates without a need for Programmable transmit and receive baud rates up to 3MHz, min. 732Hz (clock external crystals of particular values frequency 48MHz) Support hardware automatic flow control/flow control (CTSn, RTSn), RTSn control flow trigger point can be programmed Modem hardware automatic control RS485 transmit enable control Support CTS wake-up function Support IrDASIR mode Support 3/16 bit periodic modulation Support RS485 Support 9-bit mode Multiprocessor communication Fully programmable serial interface features Programmable data bit number, namely 5-, 6-, 7-, 8-, 9-bit Parity control, odd, even, no parity or fixed parity generation and detection can be Stop bit length can be programmed: 1, 2 bits; 0.5, 1.5 bits supported in Smartcard programmed mode 2020 Wireless-Tag Technology Co., Ltd. All rights reserved. http://www.wireless-tag.com 17 Wireless-Tag Technology Co., Ltd. V1.0.1 Programmable bit order with MSB or LSB first Simple half duplex communication Switch TX / RX pin configuration Disconnection signal transmission ability of LIN master and disconnection signal detection When the UART is set to LIN mode, there are a 13-bit disconnect signal generator and Support T=0 and T=1 Smartcard asynchronous protocol declared by ISO/IEC7816-3 ability of LIN slave disconnect signal detection functions Smartcard mode standard 1.5 stop bit length used in Smartcard Support ModBus communication Timeout detection function CR/LF character recognition Noise detection 4.20 Audio Interface (PDM) PDM (Pulse Density Modulation) is a modulation technique that uses digital signals to represent analog signals. PCM, also as a technique of converting analog to digital by taking regular samples at uniform intervals, expresses the amplitude of each sampled analog signal as N-bit digital component

(N=quantization depth). So the result of each sample in PCM method is always data of N-bit word length. PDM uses a clock with a sampling rate much higher than PCMs to sample and modulate the analog components, and only one bit is output, either 0 or 1. Therefore, digital audio expressed by PDM is also called Oversampled 1-bit Audio. Compared with a series of 0 and 1 in PDM, the quantization result of PCM is more intuitive and simple. 4.21 BLE BLE5.0/5.1 protocol. 2020 Wireless-Tag Technology Co., Ltd. All rights reserved. http://www.wireless-tag.com 18 Wireless-Tag Technology Co., Ltd. V1.0.1 Federal Communication Commission Statement (FCC, U.S.) 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 off and on, the user is encouraged to try to correct the interference by one 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 different from that to which the receiver is connected.

- Consult the dealer or an experienced radio/TV technician for help. This device complies with Part 15 of the FCC Rules. Operation is subject to the following 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. FCC Caution:

Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate this equipment. FCC Radiation Exposure Statement:

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body. IMPORTANT NOTES Co-location warning:

antenna or transmitter. OEM integration instructions:

This transmitter must not be co-located or operating in conjunction with any other This device is intended only for OEM integrators under the following conditions:

The transmitter module may not be co-located with any other transmitter or antenna. The module shall be only used with the external antenna(s) that has been originally tested and certified with this module. As long as the conditions above are met, further transmitter test will not be required. However, the OEM integrator is still responsible for testing their end-product for any additional compliance requirements required with this module installed (for example, digital device emissions, PC peripheral requirements, etc.). 2020 Wireless-Tag Technology Co., Ltd. All rights reserved. http://www.wireless-tag.com 19 Wireless-Tag Technology Co., Ltd. V1.0.1 Validity of using the module certification:

In the event that these conditions cannot be met (for example certain laptop configurations or co-location with another transmitter), then the FCC authorization for this module in combination with the host equipment is no longer considered valid and the FCC ID of the module cannot be used on the final product. In these circumstances, the OEM integrator will be responsible for re-evaluating the end product (including the transmitter) and obtaining a separate FCC authorization. End product labeling:

The final end product must be labeled in a visible area with the following: Contains Transmitter Module FCC ID: 2AFOS-WT5010-S2. Information that must be placed in the end user manual:

The OEM integrator has to be aware not to provide information to the end user regarding how to install or remove this RF module in the user's manual of the end product which integrates this module. The end user manual shall include all required regulatory information/warning as show in this manual. Integration instructions for host product manufactures according to KDB 996369 D03 OEM Manual v01 2.2 List of applicable FCC rules FCC Part 15 Subpart C 15.247 & 15.207 & 15.209 2.3 Specific operational use conditions The module is a Bluetooth module with BLE 2.4G function. Operation Frequency: 2402~2480MHz BLE Specification Number of Channel: 40 Modulation: GFSK Type: PCB Antenna Gain: 2 dBi The module can be used for mobile or applications with a maximum 2dBi antenna. The host manufacturer installing this module into their product must ensure that the final composit product complies with the FCC requirements by a technical assessment or evaluation to the FCC rules, including the transmitter operaition. The host manufacturer has to be aware not to provide information to the end user regarding how to install or remove this RF module in the user's manual of the end product which integrates this module. The end user manual shall include all required regulatory information/warning as show in this manual. 2020 Wireless-Tag Technology Co., Ltd. All rights reserved. http://www.wireless-tag.com 20 Wireless-Tag Technology Co., Ltd. V1.0.1 Not applicable. The module has its own antenna, and doesnt need a hosts printed board The module must be installed in the host equipment such that at least 20cm is maintained between the antenna and users body; and if RF exposure statement or module layout is changed, then the host product manufacturer required to take responsibility of the module through a change in FCC ID or new application. The FCC ID of the module cannot be used on the final product. In these circumstances, the host manufacturer will be responsible for re-evaluating the end product (including the transmitter) 2.4 Limited module procedures Not applicable. 2.5 Trace antenna designs microstrip trace antenna etc. 2.6 RF exposure considerations and obtaining a separate FCC authorization Antenna Specification are as follows:

2.7 Antennas Type: PCB Antenna Gain: 2 dBi This device is intended only for host manufacturers under the following conditions:

The transmitter module may not be co-located with any other transmitter or antenna;

The module shall be only used with the internal antenna(s) that has been originally tested and certified with this module. The antenna must be either permanently attached or employ a unique antenna coupler. requirements, etc.) As long as the conditions above are met, further transmitter test will not be required. However, the host manufacturer is still responsible for testing their end-product for any additional compliance requirements required with this module installed (for example, digital device emissions, PC peripheral 2.8 Label and compliance information Host product manufacturers need to provide a physical or e-label stating Contains Transmitter Module FCC ID: 2AFOS-WT5010-S2 with their finished product. 2.9 Information on test modes and additional testing requirements BLE Operation Frequency: 2402~2480MHz Number of Channel: 40 Modulation: GFSK Host manufacturer must perfom test of radiated & conducted emission and spurious emission, etc 2020 Wireless-Tag Technology Co., Ltd. All rights reserved. http://www.wireless-tag.com 21 Wireless-Tag Technology Co., Ltd. V1.0.1 according to the actual test modes for a stand-alone modular transmitter in a host, as well as for multiple simultaneously transmitting modules or other transmitters in a host product. Only when all the test results of test modes comply with FCC requirements, then the end product can be sold legally. 2.10 Additional testing, Part 15 Subpart B disclaimer The modular transmitter is only FCC authorized for FCC Part 15 Subpart C 15.247 & 15.207 &

15.209 and that the host product manufacturer is responsible for compliance to any other FCC rules that apply to the host not covered by the modular transmitter grant of certification. If the grantee markets their product as being Part 15 Subpart B compliant (when it also contains unintentional radiator digital circuity), then the grantee shall provide a notice stating that the final host product still requires Part 15 Subpart B compliance testing with the modular transmitter installed. 2020 Wireless-Tag Technology Co., Ltd. All rights reserved. http://www.wireless-tag.com 22

WIRELESS-TAG TECHNOLOGY CO., LIMITED.

(Date) 2021-12-06 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern:

We, the undersigned, hereby authorize (Shenzhen Microtest Co., Ltd) to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Signature:

Name: Louie Wang Job Title: Manager Email Address: engineera@wireless-tag.com Company name: WIRELESS-TAG TECHNOLOGY CO., LIMITED. Address: 801, Block A, Building 6, Shenzhen International Innovation Valley, Dashi Road, Xili Community, Xili Street, Nanshan District, Shenzhen

WIRELESS-TAG TECHNOLOGY CO., LIMITED.

(date) 2021-11-29 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (BLE Module / WT5010-S2 AND FCC ID:

2AFOS-WT5010-S2) To Whom It May Concern:

This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the Block Diagram Operation Description Schematic required to be submitted with this application be permanently withheld from public review. SPECIFY REASON FOR REQUEST The above documents are company proprietary information that could never get into the possession of your competition Please contact me if there is any information you may need. Sincerely, Signature:

Name: Louie Wang Job Title: Manager Email Address: engineera@wireless-tag.com Company name: WIRELESS-TAG TECHNOLOGY CO., LIMITED. Address: 801, Block A, Building 6, Shenzhen International Innovation Valley, Dashi Road, Xili Community, Xili Street, Nanshan District, Shenzhen

WIRELESS-TAG TECHNOLOGY CO., LIMITED. Request for Modular/Limited Modular Approval Date: December 6, 2021 Subject: Manufacturers Declaration for - Modular Approval Confidentiality Request for: ______(2AFOS-WT5010-S2)______

- Limited Modular Approval - Limited Split Modular Approval

- Split Modular Approval 8 Basic Requirements FCC Part 15.212(a)(1) For Items Marked NO(*), the Limited Module Description Must be Filled Out on the Following Pages Modular Approval Requirement Requirement Met 1. The modular transmitter must have its own RF shielding. This is intended to ensure that the module does not have to rely upon the shielding provided by the device into which it is installed in order for all modular transmitter emissions to comply with FCC limits. It is also intended to prevent coupling between the RF circuitry of the module and any wires or circuits in the device into which the module is installed. Such coupling may result in non-compliant operation. The physical crystal and tuning capacitors may be located external to the shielded radio elements. 15.212(a)(1)(i) Details: <example The module contains a metal shield which covers all RF components and circuitry. The shield is located on the top of the board next to antenna connector>

- YES - NO(*) 2. The modular transmitter must have buffered modulation/data inputs (if such inputs are provided) to ensure that the module will comply with FCC requirements under conditions of excessive data rates or over-modulation. 15.212(a)(1)(ii) Details: <example Data to the modulation circuit is buffered as described in the operational description provided with the application>

- YES - NO(*) 3. The modular transmitter must have its own power supply regulation on the module. This is intended to ensure that the module will comply with FCC requirements regardless of the design of the power supplying circuitry in the device into which the module is installed. 15.212(a)(1)(iii) Details: <example The module contains its own power supply regulation. Please refer to schematic filed with this application>

- YES - NO(*) 4. The modular transmitter must comply with the antenna and transmission system requirements of 15.203, 15.204(b), 15.204(c), 15.212(a), and 2.929(b). The antenna must either be permanently attached or employ a unique antenna coupler (at all connections between the module and the antenna, including the cable). The professional installation provision of 15.203 is not applicable to modules but can apply to limited modular approvals under paragraph 15.212(b). 15.212(a)(1)(iv) Details: <example The module connects to its antenna using an UFL connector which is considered a non-standard connector. A list of antennas tested and approved with this device may be found in users manual provided with the application>

- YES - NO(*) 5. The modular transmitter must be tested in a stand-alone configuration, i.e., the module must not be inside another device during testing. This is intended to demonstrate that the module is capable of complying with Part 15 emission limits regardless of the device into which it is eventually installed. Unless the transmitter module will be battery powered, it must comply with the AC line conducted requirements found in Section 15.207. AC or DC power lines and data input/output lines connected to the module must not contain ferrites, unless they will be marketed with the module (see Section 15.27(a)). The length of these lines shall be length typical of actual use or, if that length is unknown, at least 10 centimeters to insure that there is no coupling between the case of the module and supporting equipment. Any accessories, peripherals, or support equipment connected to the module during testing shall be unmodified or commercially available (see Section 15.31(i)). 15.212(a)(1)(v) Details: <example The module was tested stand-alone as shown in test setup photographs filed with this application>

- YES - NO(*) WIRELESS-TAG TECHNOLOGY CO., LIMITED. Modular Approval Requirement 6. The modular transmitter must be labeled with its own FCC ID number, or use an electron display (see Requirement Met KDB Publication 784748). If using a permanently affixed label with its own FCC ID number, if the FCC ID is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the enclosed module. This exterior label can use wording such as the following: Contains Transmitter Module FCC ID: XYZMODEL1 or Contains FCC ID:

XYZMODEL1. Any similar wording that expresses the same meaning may be used. The Grantee may either provide such a label, an example of which must be included in the application for equipment authorization, or, must provide adequate instructions along with the module which explain this requirement. In the latter case, a copy of these instructions must be included in the application for equipment authorization. If the modular transmitter uses an electronic display of the FCC identification number, the information must be readily accessible and visible on the modular transmitter or on the device in which it is installed. If the module is installed inside another device, then the outside of the device into which the module is installed must display a label referring to the enclosed module. This exterior label can use wording such as the following: Contains FCC certified transmitter module(s). Any similar wording that expresses the same meaning may be used. The user manual must include instructions on how to access the electronic display. A copy of these instructions must be included in the application for equipment authorization. 15.212(a)(1)(vi) Details: <example There is a label on the module as shown in the labeling exhibit filed with this application. Host specific labeling instructions are shown in the installation manual .filed with this application.>

- YES - NO(*) 7. The modular transmitter must comply with all specific rule or operating requirements applicable to the transmitter, including all the conditions provided in the integration instructions by the grantee. A copy of these instructions must be included in the application for equipment authorization. For example, there are very strict operational and timing requirements that must be met before a transmitter is authorized for operation under Section 15.231. For instance, data transmission is prohibited, except for operation under Section 15.231(e), in which case there are separate field strength level and timing requirements. Compliance with these requirements must be assured. 15.212(a)(1)(vii) Details: <example The module complies with FCC Part 15C requirements. Instructions to the OEM installer are provided in the installation manual filed with this application.>

- YES - NO(*) 8. The modular transmitter must comply with any applicable RF exposure requirements. For example, FCC Rules in Sections 2.1091, 2.1093 and specific Sections of Part 15, including 15.319(i), 15.407(f), 15.253(f) and 15.255(g), require that Unlicensed PCS, UNII and millimeter wave devices perform routine environmental evaluation for RF Exposure to demonstrate compliance. In addition, spread spectrum transmitters operating under Section 15.247 are required to address RF Exposure compliance in accordance with Section 15.247(b)(4). Modular transmitters approved under other Sections of Part 15, when necessary, may also need to address certain RF Exposure concerns, typically by providing specific installation and operating instructions for users, installers and other interested parties to ensure compliance. 15.212(a)(1)(viii) Details: <example The module meets Portable exclusion levels as shown in the RF exposure information filed with this application.>

- YES - NO(*) WIRELESS-TAG TECHNOLOGY CO., LIMITED. Limited Module Description When Applicable

* If a module does NOT meet one or more of the above 8 requirements, the applicant may request Limited Modular Approval (LMA). This Limited Modular Approval (LMA) is applied with the understanding that the applicant will demonstrate and will retain control over the final installation of the device, such that compliance of the end product is always assured. The operating condition(s) for the LMA;

the module is only approved for use when installed in devices produced by grantee. A description regarding how control of the end product, into which the module will be installed, will be maintained by the applicant/manufacturer, such that full compliance of the end product is always ensured should be provided here. Details: <example - N/A>

Software Considerations KDB 594280 / KDB 442812 (One of the following 2 items must be applied) Requirement 1. For non-Software Defined Radio transmitter modules where software is used to ensure compliance of the device, technical description must be provided about how such control is implemented to ensure prevention of third-party modification; see KDB Publication 594280. Details: <example The firmware of the device can not be modified or adjusted by the end user as described in a separate cover letter filed with this application. >

- Provided in Separate Cover Letter Requirement Met

- N/A 2. For Software Defined Radio (SDR) devices, transmitter module applications must provide a software security description; see KDB Publication 442812.

- Provided in Separate Cover Letter

- N/A Details: <example N/A>

Split Modular Requirements Requirement Provided in Manual 1. For split modular transmitters, specific descriptions for secure communications between front-end and control sections, including authentication and restrictions on third-party modifications; also, instructions to third-party integrators on how control is maintained. Details: <example N/A >

- Provided in Separate Cover Letter

- N/A WIRELESS-TAG TECHNOLOGY CO., LIMITED. OEM Integration Manual Guidance KDB 996369 D03 Section 2 Clear and Specific Instructions Describing the Conditions, Limitations, and Procedures for third-parties to use and/or integrate the module into a host device. Requirement Is this module intended for sale to third parties?

- YES

- No, If No, and LMA applies, the applicant can optionally choose to not make the following detailed info public. However there still needs to be basic integration instructions for a users manual and the information below must still be included in the operational description. If the applicant wishes to keep this info confidential, this will require a separate statement cover letter explaining the module is not for sale to third parties and that integration instructions are internal confidential documents. Items required to be in the manual See KDB 996369 D03, Section 2 As of May 1, 2019, the FCC requires ALL the following information to be in the installation manual. Modular transmitter applicants should include information in their instructions for all these items indicating clearly when they are not applicable. For example information on trace antenna design could indicate Not Applicable. Also if a module is limited to only a grantees own products and not intended for sale to third parties, the user instructions may not need to be detailed and the following items can be placed in the operational description, but this should include a cover letter as cited above. 1. List of applicable FCC rules. KDB 996369 D03, Section 2.2 a. Only list rules related to the transmitter. 2. Summarize the specific operational use conditions. KDB 996369 D03, Section 2.3 a. Conditions such as limits on antennas, cable loss, reduction of power for point to point 3. Limited Module Procedures. KDB 996369 D03, Section 2.4 systems, professional installation info a. Describe alternative means that the grantee uses to verify the host meets the necessary limiting conditions b. When RF exposure evaluation is necessary, state how control will be maintained such that compliance is ensured, such as Class II for new hosts, etc. 4. Trace antenna designs. KDB 996369 D03, Section 2.5 a. Layout of trace design, parts list, antenna, connectors, isolation requirements, tests for design verification, and production test procedures for ensuring compliance. If confidential, the method used to keep confidential must be identified and information provided in the operational description. 5. RF exposure considerations. KDB 996369 D03, Section 2.6 a. Clearly and explicitly state conditions that allow host manufacturers to use the module. Two types of instructions are necessary: first to the host manufacturer to define conditions (mobile, portable xx cm from body) and second additional text needed to be provided to the end user in the host product manuals. 6. Antennas. KDB 996369 D03, Section 2.7 a. List of antennas included in the application and all applicable professional installer instructions when applicable. The antenna list shall also identify the antenna types

(monopole, PIFA, dipole, etc note that omni-directional is not considered a type) 7. Label and compliance information. KDB 996369 D03, Section 2.8 a. Advice to host integrators that they need to provide a physical or e-label stating Contains FCC ID: with their finished product 8. Information on test modes and additional testing requirements. KDB 996369 D03, Section 2.9 a. Test modes that should be taken into consideration by host integrators including clarifications necessary for stand-alone and simultaneous configurations. b. Provide information on how to configure test modes for evaluation 9. Additional testing, Part 15 Subpart B disclaimer. KDB 996369 D03, Section 2.10

- All Items shown to the left are provided in the Modular Integration Guide (or UM) for Full Modular Approval (MA) or LMA.

- An LMA applies and is approved ONLY for use by the grantee in their own products, and not intended for sale to 3rd parties as provided in a separate cover letter. Therefore the information shown to the left is found in the theory of operation. Sincerely, By:

(Signature/Title1) ___________ Louie Wang _____________

(Print name) 1 - Must be signed by applicant contact given for applicant on the FCC site, or by the authorized agent if an appropriate authorized agent letter has been provided. Letters should be placed on appropriate letterhead.