User Manual
Table Of Contents
MRE3S WiFi Module Spec Manual
V1.0
2. GPIO Definition
GIPO NAME FUN 1 FUN 2 FUN 3 FUN 4 Light
1
GPIO16 SW_RST
2
GPIO17 ADC PWM5
3
EN
4
GPIO14
PWM4
5
GPIO11 RXD2 PWM3 I2S_RX
B
6
GPIO1 U1CTS PWM1 I2S_TX I2C_SDA1
G
7
GPIO0 U1RTS PWM0 I2S_RX I2C_SCL1 WW/CCT
8
3V3
9
GND
10 GPIO4
I2S_MCLK
11 GPIO12 TXD2
I2S_TX
12 GPIO13
I2S_WS
13 GPIO2 RXD1 PWM0 I2S_WS
R
14 GPIO3 TXD1 PWM1 I2S_CK
CW
15 RXD0 GPIO21
16 TXD0 GPIO22