WAVESHARE ELECTRONICS
WIFI232 User Manual
Page 13 of 81
3.1 Pins Definition
3.1.1 WIFI232 Pins Definition
Figure 7
WIFI232
nReady/GPIO9
RESET
UART_RTS/GPIO5
UART_TXD/GPIO3
GND
PHY_TX-
PHY_RX-
nReload/GPIO10
nLink/GPIO8
UART_CTS/GPIO6
UART_RXD/GPIO4
3.3V
Figure 8
WIFI232 Pins Map
Table 3
WIFI232 Pins Definition
Pin
Description
Name
Directio
n
Note
1
Ground--GND
GND
Power
Ground
2
VCC 3.3V@350mA
3.3V
Power
3.3V @ 350mA power input
3
UART Data Transmit
UART_TXD O
If not use UART function,
this 4 pins can be configured
as GPIO pins, and can
change GPIO pin status
through AT command
GPIO
GPIO3
I/O
4
UART Data Receive
UART_RXD I
GPIO
GPIO4
I/O
5
UART sends request
of data transmission
UART_RTS O
GPIO
GPIO5
I/O
6
UART receives data
transmission
permission
UART_CTS I