Hardware Data#

INFORMATION DOCUMENTS#

Pin Mapping Table#

GPIO Numbering

Naming

Default Features and Extended Features

0

PA0

BOOT

1

PA1

I2C_SCL/ADC0

4

PA4

I2C_SDA/ADC1

7

PA7

GPIO/PWM4

16

PB0

GPIO/PWM0/UART3_TX

17

PB1

GPIO/PWM1/UART3_RX

18

PB2

SPI_SCK/PWM2/UART2_TX

19

PB3

SPI_MISO/PWM3/UART2_RX

20

PB4

SPI_CS/UART4_TX

21

PB5

SPI_MOSI/UART4_RX

22

PB6

UART1_TX

23

PB7

UART1_RX

24

PB8

GPIO

25

PB9

GPIO

26

PB10

GPIO

27

PB11

GPIO

35

PB19

UART0_TX

36

PB20

UART0_RX

Only BOOT and UART0_TX/RX are configured when starting up, other digital pins are GPIO pins, and the status is input high resistance.

ADC Number (LuatOS)

Features

0

Module ADC0-PA1

1

Module ADC1-PA4

adc.CH_CPU

CPU Temperature

adc.CH_VBAT

Internal voltage

RF pin#

As a hidden function, the RF pin of the Air101 is: 8

When designing a PCB, this pin must be ESD protected.!!!

Functionally supports BLE 4.2 and wifi 2.4G communication, not supported wifi 5G