User's Manual

S76S
LoRa Wireless Communication Module
H
901-10201
Mar 22th ,2017
9 of 18
Product Name
Version
Doc No
Date
Page
3. Pin Definition
Pin
Definition
I/O
Description
1
NC
2
GND
Ground pin
3
GND
Ground pin
4
PC0
I/O
MCU pin name: PC0
5
PC1
I/O
MCU pin name: PC1
6
PC2
I/O
MCU pin name: PC2
7
PC3
I/O
MCU pin name: PC3
8
NC
9
NC
10
NC
11
NC
12
NRST
Hardware reset pin
13
PA0
I/O
MCU pin name: PA0
14
GND
Ground pin
15
GND
Ground pin
16
PA2_TXD_A
I/O
MCU pin name: PA2
17
PA3_RXD_A
I/O
MCU pin name: PA3
18
PA4_SPI1_NSS
I/O
MCU pin name: PA4
19
PA5_SPI1_SCK
I/O
MCU pin name: PA5
20
PA6_SPI1_MISO
I/O
MCU pin name: PA6
21
PA7_SPI1_MOSI
I/O
MCU pin name: PA7
22
PC4
I/O
MCU pin name: PC4
23
PC5
I/O
MCU pin name: PC5
24
PB0_IO_INT1
I/O
MCU pin name: PB0
25
PB1_IO_INT2
I/O
MCU pin name: PB1
26
PC6
I/O
MCU pin name: PC6
27
PC7
I/O
MCU pin name: PC7
28
PC8
I/O
MCU pin name: PC8
29
PC9
I/O
MCU pin name: PC9
30
RXTX/RFMOD
O
Control signal from SX1276, which connects to internal RF switch at
the same time.