Product Manual

WRD3L Datasheet
Hangzhou Tuya Information Technology Co., Ltd. 7 V2.0.1
Pin No.
Symbol
I/O Type
Function
5
GPIO24
I/O
GPIO_24, a standard PWM pin, which is
connected to GPIO24 (pin 32) on the internal IC
6
GPIO23
I/O
GPIO_23, a standard PWM pin, which is
connected to GPIO23 (pin 33) on the internal IC
7
GPIO22
I/O
GPIO_22, a standard PWM pin, which is
connected to GPIO22 (pin 34) on the internal IC
8
VCC
P
Power supply pin (3.3 V)
9
GND
P
Power supply reference ground pin
10
GPIO1
Output
GPIO_1, which is connected to GPIO0 (pin 21)
on the internal IC
11
GPIO2
Output
UART2_TXD, which is used to display the
module internal information and connected to
GPIO2 (pin 22) on the internal IC
12
GPIO5
I/O
GPIO_5, which is connected to GPIO5 (pin 14)
on the internal IC
13
GPIO3
I/O
GPIO_3, a standard PWM pin, which is
connected to GPIO3 (pin 23) on the internal IC
14
GPIO25
I/O
GPIO_25, a standard PWM pin, which is
connected to GPIO25 (pin 31) on the internal IC
15
RX
I/O
UART_RX, which is connected to GPIO27 (pin
16) on the internal IC (See the following Note 3.)
16
TX
Output
UART_TX, which is connected to GPIO26 (pin
24) on the internal IC (See the following Note 3.)
Note:
1. P indicates power supply pins, I/O indicates input/output pins, and AI indicates
analog input pins. nRST is only a module hardware reset pin and cannot clear the Wi-
Fi network configuration.
2. This pin can only function as an ADC input and not a common I/O. If this pin is not
used, it must be disconnected. When this pin is used as an ADC input, the input
voltage range is 0 V to 2.0 V.