Hardware Data#

Please note that this is the information page of Air103, not Air32F103, these are two completely different chips.

For information about Air32F103 series chips, please selectair32f103

Chip and Pin Definition#

Pin Mapping Table#

GPIO Numbering

Naming

Default Features and Extended Features

0

PA_00

BOOT

1

PA_01

GPIO_01 / ADC_1 / I2C_SCL

2

PA_02

GPIO_02 / ADC_3/ PWM_30

3

PA_03

GPIO_03 / ADC_2/ PWM_31

4

PA_04

GPIO_04 / ADC_0 / I2C_SDA

5

PA_05

GPIO_05

6

PA_06

GPIO_06

7

PA_07

GPIO_07/ PWM_04

8

PA_08

GPIO_08 / UART4_TX

9

PA_09

GPIO_09 / UART4_RX

10

PA_10

GPIO_10/ PWM_10

11

PA_11

GPIO_11 / PWM_11

12

PA_12

GPIO_12/ UART5_TX/ PWM_12

13

PA_13

GPIO_13/ UART5_RX/ PWM_13

14

PA_14

GPIO_14/ PWM_14

15

PA_15

GPIO_15 / PSRAM_CLK

16

PB_00

GPIO_16 / PWM_00 / UART3_TX

17

PB_01

GPIO_17 / PWM_01 / UART3_RX

18

PB_02

GPIO_18 / UART2_TX / PSRAM_D0 / SPI0_CLK / PWM_02

19

PB_03

GPIO_19 / UART2_RX / PSRAM_D1 / SPI0_MISO / PWM_03

20

PB_04

GPIO_20 / PSRAM_D2 / SPI0_CS

21

PB_05

GPIO_21 / PSRAM_D3 / SPI0_MOSI

22

PB_06

GPIO_22 / UART1_TX / SDIO_CLK

23

PB_07

GPIO_23 / UART1_RX / SDIO_CMD

24

PB_08

GPIO_24 / SDIO_D0

25

PB_09

GPIO_25 / SDIO_D1

26

PB_10

GPIO_26 / SDIO_D2

27

PB_11

GPIO_27 / SDIO_D3

28

PB_12

GPIO_28 / PWM_20

29

PB_13

GPIO_29 / PWM_21

30

PB_14

GPIO_30 / SPI1_CS/ PWM_22

31

PB_15

GPIO_31 / SPI1_CLK/ PWM_23

32

PB_16

GPIO_32 / SPI1_MISO / PWM_24

33

PB_17

GPIO_33 / SPI1_MOSI

34

PB_18

GPIO_34

35

PB_19

UART0_TX

36

PB_20

UART0_RX

37

PB_21

GPIO_37

38

PB_22

GPIO_38

40

PB_24

GPIO_40/ PWM_32

41

PB_25

GPIO_41/ PWM_33

42

PB_26

GPIO_42 / PWM_34

43

PB_27

GPIO_43 / PSRAM_CS

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

2

Module ADC2-PA3

3

Module ADC3-PA2

adc.CH_CPU

CPU Temperature

adc.CH_VBAT

Internal voltage

RF pin#

As a hidden function, the RF pin of the Air103 is: 14

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

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