Product Manual

ManualsBrandsHangzhou Tuya Information Technology ManualsElectronicsWiFi and Bluetooth module

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WBR3 Datasheet

7

Pin No.

Symbol

I/O Type

Function

connected to pin 21 on the internal IC

3

EN

I/O

Enable pin, which is active at a high level (The

pin has been pulled up and is externally

controllable.)

4

A_11

I/O

GPIOA_11, hardware PWM pin, which is

connected to pin 25 on the internal IC

5

A_2

I/O

GPIOA_2, hardware PWM pin, which is

connected to pin 18 on the internal IC

6

A_3

I/O

GPIOA_3, hardware PWM pin, which is

connected to pin 19 on the internal IC

7

A_4

I/O

GPIOA_4, hardware PWM pin, which is

connected to pin 20 on the internal IC

8

VCC

P

Power supply pin (3.3 V)

9

GND

P

Power supply reference ground pin

10

A_12

I/O

GPIOA_12, hardware PWM pin, which is

connected to pin 26 on the internal IC

11

A_16

I/O

GPIOA_16, UART_Log_TXD, which is used

for printing the module internal information and

can be configured as a common GPIO

12

A_17

I/O

GPIOA_17, hardware PWM pin, which is

connected to pin 38 on the internal IC

13

A_18

I/O

GPIOA_18, hardware PWM pin, which is

connected to pin 39 on the internal IC

14

A_19

I/O

GPIOA_19, hardware PWM pin, which is

connected to pin 40 on the internal IC

15

RXD

I/O

GPIOA_13, UART0_RXD (user-side serial

interface)

16

TXD

I/O

GPIOA_14, UART0_TXD (user-side serial

interface)

Note:

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