Operation Manual

Page 6 of 10
3.2 Pinout
Pin
Symbol
Description
1,11
3V3
Voltage Supply Input
2
D_OUT
Serial Data Output.
3
D_IN
Serial Data Input.
4
NC
Reserved for testing, leave
unconnected
5
RESETn
MCU_Reset
Active Low Input
6
TRIGGERn
Trigger Radio Transmission
Active Low Input
7,8,9,10
19,20,21,23
GND
Ground
12
STATUSn
Module awake status
Active Low Output
13
14
15
16
GPIO_1
GPIO_2
GPIO_3
GPIO_4
General Purpose Input/Output
17
18
SWD_IO
SWD_CLK
Programming Pins
Reserved for firmware
Updates
22
RF_Out
RF output to Antenna