Users Manual

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LSN50 LoRa Sensor Node User Manual 7 / 55
1.5 Pin Definitions
No.
Signal
Direction
Function
Remark
1
VCC(2.9V)
OUTPUT
VCC
Directly connect to main
power for board
2
PA0
In/Out
Directly from STM32 chip
Used as ADC in LSN50 image
3
PA1
In/Out
Directly from STM32 chip
4
PA2
In/Out
Directly from STM32 chip, 10k
pull up to VCC
Used as UART_TXD in LSN50
image
5
PA3
In/Out
Directly from STM32 chip, 10k
pull up to VCC
Used as UART_RXD in LSN50
image