Data Sheet

RM1xx LoRa/BLE Modules
Datasheet
https://connectivity.lairdtech.com/wireless-
modules/lorawan-solutions
10
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3.2 Pin Definitions
Table 2: Pin definitions
Pin #
Pin
Name
Default
Function
Alt.
Funct.
Default
Direction
Note14
Pull-
up/
Pull-
down
Note14
Notes Comment
1
GND
-
-
-
-
-
-
2 SIO_21 DIO UART TX OUT
Set
high in
FW
1,2,4,6,7
UARTCLOSE() selects DIO
functionality and UARTOPEN()
selects UART comms
behaviour
3 SIO_22 DIO UART RX IN
PULL-
UP
1,2,4,6,7
4 SIO_23 DIO UART RTS OUT
Set low
in FW
1,2,4,6,7
5 SIO_24 DIO UART CTS IN
PULL-
DOWN
1,2,4,6,7
6 SIO_25 nAutoRUN/DIO DIO IN NONE IN only
Laird Devkit, UART_DSR via
J10, J12
7 SIO_28 vSP/DIO DIO IN
PULL-
DOWN
1,2,6,12,13 Laird DevKit: J6 (vSP/OTA)
8
GND
-
-
-
-
-
9 SIO_29 DIO I2C SCL IN
PULL-
UP
1,2,6,11
I2COPEN() in smartBASIC
selects I2C function
10 SIO_30 DIO I2C SDA IN
PULL-
UP
1,2,6,11
11
GND
12
VCC_BLE
-
-
-
-
-
Vcc for BLE Radio
13
VCC_LORA
-
-
-
-
-
Vcc for Lora Radio
14
GND
-
-
-
-
-
15 SIO_00 DIO SPI CLK IN
PULL-
UP
1,2,6,11
SPIOPEN() in smartBASIC
selects SPI function, MOSI and
CLK will be outputs when in
SPI master mode. See note 11
16 SIO_17 DIO SPI MISO IN
PULL-
UP
1,2,6,11
17 SIO_03/AIN DIO/AIN SPI MOSI IN
PULL-
UP
1,2,3,4,5,6,11
18 SIO_04/AIN DIO AIN IN
PULL-
UP
1,2,3,4,5,6,11 Laird Devkit: SPI Slave Select
19 SIO_05/AIN DIO AIN IN
PULL-
UP
1,2,3,4,5,6,11
Laird Devkit: Button2 or Ana
Temp Sensor via J7
20 SIO_06/AIN DIO AIN IN
PULL-
UP
1,2,3,4,5,6,11
Laird Devkit: LED5 or Arduino
A0 Via J8
21
GND
22
nRESET
IN
9,10
System Reset (Active low)
23
NC
9
DO NOT CONNECT
24
GND