Specifications

TB-02 Specification V1.0
C
opyright © 2019 Shenzhen Ai-
Thinker Technology Co., Ltd All Rights Reserved
IX
4.PIN DEFINITION
The TB-02 module has a total of 22 interfaces. For example, the pin diagram, the pin function
definition table is the interface definition.
TB-02 Pin diagram
PIN function definition sheet
No.
Item
Function Description
1
GND
Ground
2
3V3
Electricity supply
3
TX0
PWM4 output/UART_TX/SAR ADC input/GPIO PB1
4
RX0
PWM0 inverting output/UART_RX/GPIO PA0
5
SWS
Single wire slave/UART_RTS/GPIO PA7
6
A1
GPIO PA1
7
D7
GPIO PD7/SPI clock
（
I2C_SCK
）
8
D4
GPIO PD4/Single wire master/PWM2 inverting output
9
D3
PWM1 inverting output/GPIO PD3
10
D2
SPI chip select
（
active low
）
/PWM3 output/GPIO PD2
11
C4
PWM2 output/UART_CTS/PWM0 inverting output
/SAR ADC input/GPIO PC4
12
C3
PWM1 output/UART_RX/I2C serial clock/32kHz crystal input
（
optional
）
/GPIO PC3
13
C2
PWM0 output/I2C serial data/32kHz crystal output
（
optional
）
/GPIO PC2