Laird RM186, Hardware Integration Manual

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LoRa/BLE Modules
Hardware Integration Guide
Embedded Wireless Solutions Support Center:
http://ews-support.lairdtech.com
www.lairdtech.com/wireless
9
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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 DIO - IN PULL-UP 13,1,2,6 Laird DevKit: J6
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