Specifications

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Table Of Contents

1.5 Definition of pins

Pin

Name/Function

Type

Note

1

VCC/VBAT

P

Power input, 3.0-3.6V, recommended 3.3V

2

P09/PWM

I/O

GPIO9 or PWM3

3

GND

VSS

Power ground

4

P18/PWM4

I/O

GPIO18 or PWM4

5

P10/USART1_RX

I/0

RXD of UART1, usually for debugging

USART reception, or used as GPIO10 port

6

P19/PWM5

I/O

GPIO19 or PWM5

7

P11/USART1_TX

I/O

TXD of UART1, usually for debugging

USART transmission, or used as GPIO11 port

8

P04/ADC1

I/O

GPIO4 or ADC input

9

P07/PWM

I/O

GPIO7 or PWM1

10

CEN

Module enable

11

P06/PWM

I/O

GPIO6 or PWM0