Pin No.

Pin Name

Pin Type

Pin Dscriptions

1

GND

Ground

GND地

2

VCC

Power

1.9V-3.6V power  1.9-3.6v电源

3

AIN3

Analog input

ADC input 3   ADC第3输入脚

4

AIN2

Analog input

ADC input 2   ADC第2输入脚

5

AIN1

Analog input

ADC input 1   ADC第1输入脚

6

AIN0

Analog input

ADC input 0   ADC第0输入脚

7

AREF

Analog input

ADC reference voltage

ADC参考电压

8

GND

Ground

GND地

9

P0.0

Digital I/O

Port 0, bit 0 or EEPROM.CSN or DIO2

P0口，或EEPROM的CSN或DIO2

10

P0.1/RXD

Digital I/O

Port 0, bit 1 or UART.RXD or DIO3

P0口或串口RXD或DIO3

11

P0.2/TXD

Digital I/O

Port 0, bit 2 or UART.TXD or DIO4

P0口或串口TXD或DIO4

12

P0.3/INT0_N

Digital I/O

Port 0, bit 3 or INT0_N interrupt or DIO5

P0口或INT0_N中断或DIO5

13

P0.4/INT1_N

Digital I/O

Port 0, bit 4 or INT1_N interrupt or DIO6

P0口或INT0_N中断或DIO6

14

P0.5/T0

Digital I/O

Port 0, bit 5 or T0 timer input or DIO7

P0口或T0定时器或DIO7

15

P0.6/T1

Digital I/O

Port 0, bit 6 or T1 timer input or DIO8

P0口或T1定时器或DIO8

16

P0.7/PWM

Digital I/O

Port 0, bit 7 or PWM output or DIO9

P0口或PWM输出或DIO9

17

P1.1

Digital I/O

Port 1, bit 1 or SPI data out or DIO1

P1口或SPI数据输出或DIO1

18

P1.2

Digital input

Port 1, bit 2 or SPI data in or DIN0

P1口或SPI数据输出或DIN0

19

P1.0/T2

Digital I/O

Port 1, bit 0 or T2 timer input or SPI clock or DIO0

P1口或T2定时器输入或SPI时钟或DIO0

20

P0.0

Digital I/O

Port 0, bit 0 or EEPROM.CSN or DIO2

P0口或EEPROM的CSN或DIO2