TUYA TYWRD2S - Page 7

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TYWRD2S Datasheet

Hangzhou Tuya Information Technology Co., Ltd. 7 V2.0.0

Pin No.

Symbol

I/O Type

Function

I/O

UART_RX, which is connected to GPIO27

(pin 16) on the IC (See the following Note

3.)

I/O

GPIO_25, a standard PWM pin, which is

connected to GPIO25 (pin 31) on the IC

Output

UART_TX, which is connected to GPIO26

(pin 24) on the IC (See the following Note

3.)

ADC

ADC pin (See the following Note 2.)

IO24

I/O

GPIO_24, a standard PWM pin, which is

connected to GPIO24 (pin 32) on the IC

RST

I/O

Hardware reset pin (active at a low level)

IO3

I/O

GPIO_3, a standard PWM pin, which is

connected to GPIO3 (pin 23) on the IC

Note:

1. P indicates power supply pins, I/O indicates input/output pins, and AI indicates analog

input pins.

RST is only a 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 the ADC input, the input voltage range is 0 V to 2.0 V.

3. The UART pins are user-side serial interfaces.