Snake_モジュール_データシート暫定版_V1.0

Snake-B Specification Snake-B Specification Project:Snake/BT 5.3 module Module name:Snake-B Designed:Suzhou Pairlink Network Technology Ltd. Version Note Date V1.0 Create 2024/03/10 This document contains information that is proprietary to Pairlink . This document is commercially confidential and must NOT be disclosed to third parties without prior consent. The information provided herein is believed to be reliable. But production testing may not include testing of all parameters. Pairlink reserves the right to change information at any time without notification. - 1 - www.pairlink.com.cn All rights reserved Suzhou Pairlink Network Technology Ltd.

Snake-B Specification Content 1.Functional Characteristics ........................................................................................................ - 3 - 1.1.Product Feature ................................................................................................................. - 3 - 1.2.Application Domain ........................................................................................................... - 3 - 2.Electrical Specifications ............................................................................................................ - 4 - 2.1.Absolute Ratings ................................................................................................................ - 4 - 2.2.Recommended Operating Conditions ............................................................................... - 4 - 2.3.Physical Parameters ........................................................................................................... - 5 - 3.Peripheral Interface .................................................................................................................. - 5 - 4.Hardware Design and PCB layout ............................................................................................. - 6 - 4.1.Pin assignment and Pin description .................................................................................. - 6 - 4.2.Reference Design ............................................................................................................... - 7 - 4.3.Appearance and Dimensions ............................................................................................. - 9 - 4.4.Module Layout Guideline ................................................................................................ - 10 - 5.Packing Information................................................................................................................ - 11 - 5.1.Rolling Information .......................................................................................................... - 11 - 6.Welding Declaration ............................................................................................................... - 12 - - 2 - www.pairlink.com.cn All rights reserved Suzhou Pairlink Network Technology Ltd.

Snake-B Specification 1.Functional Characteristics Snake-B is a compact, self-developed patch-type Bluetooth wireless module centered on the Realtek RTL8763EFL chipset. The RTL8763EFL integrates an armv8-M 32bit processor and DSP, supporting the BT5.3 protocol and LE Audio-related functions. Snake-B integral compact, integrated PCB antenna and the 25PIN surface patch package for easy the design in hardware and institution for user. It suitable for various occasions short distance wireless communication. 1.1.Product Feature 1: Support Pairlink transmission and control protocol, suitable for all kinds of smart devices. Pairlink also provides the design and development of APK / APP control software products. Provide a one-stop solution. 2: BT protocol support: BR/EDR/LE-1M/LE-2M/LE audio. 3: BT profile support:AVRVP, A2DP,GAVDP,GOEP,HFP,HSP,HID,MAP,PMAP,SPP. 4: Audio codec support:SBC,mSBC,LC3,MP3. 5: Snake-B under Bluetooth 5.3 specification. 6: Powerful RF performance. • max Tx Power 7.5 dBm @ EDR 2M • max Tx Power 10 dBm @ BLE • RX sensitivity -97.5 dB (1M BLE) • RX sensitivity -94.5 dBm (1M BR) • RX sensitivity -94 dBm (2M EDR) 1.2.Application Domain 1: Bluetooth headphones, Bluetooth speakers, smartwatches. 2: Industrial remote control / Industrial telemetry / Industrial data collection. 3: Bluetooth microcontrollers2.Electrical Specifications - 3 - www.pairlink.com.cn All rights reserved Suzhou Pairlink Network Technology Ltd.

Snake-B Specification 2.Electrical Specifications 2.1.Absolute Ratings Specification Parameter Unit Min. Max. Burn the module permanently Power Supply(V) -0.3V +3.6V if it exceeds +3.6V Storage temperature(℃) -40 +105 Working temperature (℃) -20 +85 ESD HBM -2KV +2KV Human Body Model ESD CDM -500V +500V Charged Device Model 2.2.Recommended Operating Conditions Specification Parameter Note Min. Typical. Max. Power Supply(V) 3.0 3.3 3.6 VBAT Input Can't communicate with 5V TTL Communication level(V) 3.3 level directly Working temperature(℃) -20 25 +85 TX Current Reserved (mA) Reserved Consume RX Current Reserved (mA) Sleep Current Reserved (uA) +7.5 BR/EDR mode TX Power(dBm) +10 BLE mode -94.5 1M BR Receive Sensitivity(dBm) -94 2M BR -97.5 1M BLE RF Frequency Range(MHz) 2402 2480 - 4 - www.pairlink.com.cn All rights reserved Suzhou Pairlink Network Technology Ltd.

Snake-B Specification Digital I/O Characteristic Specification Characteristics Condition Symbol Unit Min. Typical Max. Input Low Voltage VIL -0.4 0 0.4 V Input High VoltageA VBAT VIH 0.7*VBAT VBAT+0.4V V Output Low Voltage Input VOL 0 - 0.4 V Output High Voltage VOH VBAT-0.4 - VBAT V A: The input high Voltage cannot exceed the limit voltage of 3.6V. 2.3.Physical Parameters Parameter Performance Note Communication 10m PCB antenna, BR/EDR mode Distance 50m PCB antenna, BLE mode Crystal 40MHz Industry Standard Protocol BT 5.3 BR/EDR/LE-1M/LE-2M/LE-Audio Package Patch Refer to section 4.3 IC RTL8763EFL QFN40 Core ARM Cortex-M4 RAM 532KB MCU/DSP shared Flash 4MB Embedded SOC memory Dimensions 17.8mm*12.0mm*1.9mm L*W*H RF Interface PCB Antenna -0.41dBm 3.Peripheral Interface ⚫ 8 x Multiplexing GPIOs ⚫ 3 x UART interface ⚫ 1 x I2S/PCM interface ⚫ 1 x DMIC interface ⚫ 1 x SPI interface with master configurable ⚫ 3 x I2C interface ⚫ 2 x 12-bit ADC input ⚫ 6 x PWM interface ⚫ HW KeyScan - 5 - www.pairlink.com.cn All rights reserved Suzhou Pairlink Network Technology Ltd.

Snake-B Specification 4.Hardware Design and PCB layout 4.1.Pin assignment and Pin description Snake-B Pin definition can refer to Figure 1. Table 1: Module Pin Description Pin Number Pin Name I/O Alternate Function Description 12 VBAT P Power Supply(DC3.0V~3.6V). 1,6,15,21 GND P GND 14 RESET DI Reset signal (active low) 7 MFB DI Test Pad, Keep Floating. 2 P1_0 DIO GPIO/SWCLK 3 P1_1 DIO GPIO/SWDIO 4 P3_0 DIO GPIO/UART_RX 5 P3_1 DIO GPIO/UART_TX GPIO/ADC3 8 P0_3 DIO/A It cannot be used as an LED drive GPIO/ADC4 9 P0_2 DIO/A It cannot be used as an LED drive 10 P0_1 DIO GPIO 11 P0_0 DIO GPIO Keep Floating: 13 HCI_SELECT DIO Pull Low:HCI Mode MIC2 input negative pad. 16 MIC2_N/AUX_L A AUX input left channel pad. MIC2 input positive pad. 17 MIC2_P/AUX_R A AUX input left channel pad. 18 MIC_BIAS P Microphone bias output 19 MIC1_N A MIC1 input negative pad. 20 MIC1_P A MIC1 input positive pad. 22 SPKL_P A Left channel speaker output positive. 23 SPKL_N A Left channel speaker output negative. 24 SPKR_N A Right channel speaker output negative. 25 SPKR_P A Right channel speaker output positive. - 6 - www.pairlink.com.cn All rights reserved Suzhou Pairlink Network Technology Ltd.

Snake-B Specification Note: All GPIOs has internal pull-up and pull-down resistors integrated. Support GPIO multiplexing function, I2S, I2C, UART, SPI, PWM, DMIC and other functions can be arbitrarily configured on GPIO. 4.2.Reference Design The latest schematic and design examples, bill of material, and layout file are available from original developer . Contact us for details. Figure 1: Module Reference Design Circuit Description 1: PIN12(VBAT) power supply voltage ranges from 3.00V to 3.60V. Exceeding 3.60V will damage the module. 2: PIN13(HCI_SELECT) is the enable pin for HCI mode. If HCI_SELECT remains at a low level during power-on, the module will enter HCI mode. 3: Pin14(RESET) is active low, and the internal 10K pull-up. General applications need to be suspended. 4: The module supports GPIO multiplexing function, peripheral functions(e.g.I2C,UART,I2S,PWM,etc) are configured flexibly mapping to each pin. 5: PIN4 (P3_0 /UART_TX), PIN5 (P3_1 /UART_RX) are configured as the module's UART interface by default. 6: JP1,JP2 are download and debug interface, that need to be reserved if the PCB space is sufficient. - 7 - www.pairlink.com.cn All rights reserved Suzhou Pairlink Network Technology Ltd.

Snake-B Specification 7: The MIC reference design is as follows: 8: The speaker design reference is as follows: - 8 - www.pairlink.com.cn All rights reserved Suzhou Pairlink Network Technology Ltd.

Snake-B Specification 4.3.Appearance and Dimensions Figure 2 shows the size of the module. The following land pattern size is recommended for user board design. However, user can modify it according PCB soldering conditions. Sufficient examination is necessary if use the modified land pattern. Figure 2: Mechanical Information Dimensions (mm) Symbol Min. Nom. Max. L 17.70 17.80 17.90 W 11.90 12.00 12.10 H 1.80 1.90 2.00 - 9 - www.pairlink.com.cn All rights reserved Suzhou Pairlink Network Technology Ltd.

Snake-B Specification 4.4.Module Layout Guideline The layout on user PCB should be designed according to the following guideline. When the module is placed on the PCB, it must be ensured that the RF antenna area (2 times the width of the module) is hollow or suspended, and there must be no traces, vias or copper. Figure 3: Module Placement - 1 0 - www.pairlink.com.cn All rights reserved Suzhou Pairlink Network Technology Ltd.

Snake-B Specification 5.Packing Information 5.1.Rolling Information Product name MOQ Packing method Single package quantity Snake-B 1000PCS Tape and Reel 1000PCS - 1 1 - www.pairlink.com.cn All rights reserved Suzhou Pairlink Network Technology Ltd.

Snake-B Specification 6.Welding Declaration The Snake-B module only supports one reflow soldering. Pairlink is not responsible for the module failure caused by multiple reflow soldering. Figure 4: Reflow Soldering Temperature Figure 5: Reflow Soldering Curve - 1 2 - www.pairlink.com.cn All rights reserved Suzhou Pairlink Network Technology Ltd.