User's Manual

XW71-WiFi
3
EN
General IO, Compatible with other module design docking
4
P14
General IO，
5
PWM5
General IO, PWM5
6
PWM4
General IO, PWM4
7
PWM0
General IO, PWM0
8
3V3
Module total power input，Voltage2.8V~3.6V，
Recommend3.3V 500mA
9
NC
-
10
OS
General IO, SPI Burn the mouth，not available
11
SI
General IO, SPI Burn the mouth，Not recommended
12
SCK
General IO, SPI Burn the mouth ,Not recommended
13
RXD2
General IO, UART2_RXD(Used to print module internal
information)
14
NC
-
15
GND
Module grounding pins
16
PWM3
General IO, PWM3
17
TXD2
General IO, UART2_TXD(Used to print module internal
information)
18
CSN
General IO, SPI Burn the mouth，Not recommended
19
PWM2
General IO, PWM2
20
PWM1
General IO, PWM1
21
RXD1
General IO, UART1_RXD（Communicate with MCU）
22
TXD1
General IO, UART1_TXD（Communicate with MCU）
3. Hardware design
3.1 Minimal system