1

RST

AO

Module reset input pin, active low

2

P07

I/O

GPI07

3

P31

I/O

ADC/CH1

4

P10

I/O

PWM[0](20mA)

5

P11

I/O

Key input pin, active low

6

P12

I/O

PWM[2]

7

P13

I/O

PWM[3]

8

3.3V

P

Module power supply 3.3V

10

P32

ADC

Ch2

11

P30

ADC

Ch4

12

P33

ADC

Ch3

13

P14

I/O

PWM[4]

14

P15

I/O

PWM[5]

15

GND

P

Power reference ground

16

P02

I/O

Status indication LED output, active low

17

P03

I/O

GPIO3

18

P04

I/O

GPIO4

19

P05

I/O

GPIO5

20

P06

I/O

CPIO6

twenty one

RXD

I/O

UART input

twenty two

TXD

I/O

UART output