Wellntel 1400004B00101 User Manual

Module Pin Name and Description:

Pin #

Pin Name

Pin Description

1

GND

Ground

2

VCC

Power supply

3

DOUT / DIO­PA9

4

DIN / DIO­PA10

UART Data In / GPIO / I2C SDA / PWM
5

DIO-PC13

GPIO / RTC Alarm

6

*RESET

Module Reset

7

RSSI
PWM/DIO­PB4

RX Signal Strength Indicator / GPIO

8

DIO-PB10

Pulse Width Modulator / GPIO

9

[reserved]

Do not connect

10

*DTR /
SLEEP_RQ /
DIO-PB0

UART Data Out / GPIO / I2C SCL / PWM

Pin Sleep Control Line / GPIO / A2D input /
PWM

11

GND

Ground

12

*SPI_ATTN /
*BOOTMODE
, DIO-PF11

Select boot source / GPIO

13

GND

Ground

14

SPI_CLK /
DIO-PA5

Serial Peripheral Interface Clock / GPIO / A2D
input / PWM

15

*SPI_SSEL /
DIO-PA4

Serial Peripheral Interface not Select / GPIO /
A2D input / PWM

16

SPI_MOSI /
DIO-PA7

Serial Peripheral Interface Data In / GPIO /
A2D input / PWM

17

SPI_MISO /
DIO-PA6

18

[reserved]

19

[reserved]

Do not connect / GPIO

20

[reserved]

21

[reserved]

22

GND

Ground

23

[reserved]

24

DIO-PC14

GPIO

25

*CTS / DIO­PA11

Clear to Send Flow Control / GPIO / PWM /
CAN / USB

26

ON / *SLEEP
/ DIO-PA15

Module Status Indicator / GPIO / PWM /
UART2 RX

27

AD9

28

DIO-PB3

Can boot from UART, FLASH, RAM, I2C, or USB

Serial Peripheral Interface Data In / GPIO /
A2D input / PWM

Do not connect

SWCLK; used in production to program uC

Do not connect PWM / GPIO

Do not connect

SWDIO; used in production to program uC

Do not connect

GPIO

A2D input / PWM / GPIO

GPIO / PWM