Specifications

2.Pin pin definition
1. 1
Module
PIN
Interface diagram
2.2Pin function
NO Name IO Type Description Configurable Functions
1 CHIP_EN I/O Chip enable pin (active high)
2 GPIO5 I/O GPIO5 SDIO,SPI, I2C, UART, PWM0, ADC,ACOMP
3 GPIO2 I/O GPIO2 SDIO, SFLASH, SPI, I2C, UART, PWM2
4 GPIO11 I/O GPIO11 SPI, I2C, UART, PWM1, ADC,
5 GPIO12 I/O GPIO12 SPI, I2C, UART, PWM2, ADC, ACOMP
6 GPIO14 I/O GPIO14 SPI, I2C, UART, PWM4, ADC, ACOMP, DAC
7 GPIO17 I/O GPIO17 SPI, I2C, UART, PWM2,
8 VCC P Power supply. 3.3V is required
9 GND P Ground connections
10 GPIO0 I/O GPIO0 SDIO, SFLASH, SPI, I2C, UART, PWM0
11 GPIO8 I/O GPIO8 (Boot option). SPI, I2C, UART, PWM3
12 GPIO1 I/O GPIO1 SDIO, SFLASH, SPI, I2C, UART, PWM1
13 GPIO3 I/O GPIO3
SDIO, SPI, I2C, pwm3, user communication
serial port RXD
14 GPIO4 I/O GPIO4
SDIO, SPI, I2C, pwm4, ADC, acomp, user
communication
Serial port TXD
15 RXD I/O UART RX
This serial port can only be used as a
serial port for burning and log output
16 TXD I/O UART TX
Description: 1.The standard transparent firmware uses gpio3 (user communication serial port RXD) and gpio4 (user communication
serial port TXD) as communication serial ports with MCU.
2.The module supports up to five PWM outputs, and only one GPIO port can be set for thePWM of the same group.