User's Manual

LoRa/BLE Modules
Hardware Integration Guide
Embedded Wireless Solutions Support Center:
http://ews-support.lairdtech.com
www.lairdtech.com/wireless
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CONTENTS
Overview and Key Features ........................................................................................................................................5
Features and Benefits .............................................................................................................................................5
Application Areas ....................................................................................................................................................5
Specifications ..............................................................................................................................................................6
Hardware Specifications .............................................................................................................................................9
Block Diagram and Pin-out .....................................................................................................................................9
Pin Definitions ..................................................................................................................................................... 10
Electrical Specifications ....................................................................................................................................... 12
Absolute Maximum Ratings............................................................................................................................. 12
Recommended Operating Parameters ............................................................................................................ 12
nAutoRUN Pin and Operating Modes .............................................................................................................. 14
LoRa Power Consumption ....................................................................................................................................... 15
BLE Power Consumption ......................................................................................................................................... 15
BLE Measured Peak Current Waveforms during Connection ............................................................................. 17
Peripheral Block Current Consumption ............................................................................................................... 17
Functional Description ............................................................................................................................................. 18
Power Management (includes brown-out and power on reset) ........................................................................ 18
Clocks and Timers ................................................................................................................................................ 19
Clocks ............................................................................................................................................................... 19
Timers .............................................................................................................................................................. 19
Memory for smartBASIC Application Code ......................................................................................................... 19
RF ......................................................................................................................................................................... 19
UART Interface .................................................................................................................................................... 19
SPI Bus ................................................................................................................................................................. 20
I2C Interface ........................................................................................................................................................ 21
General Purpose I/O, ADC and PWM/FREQ ........................................................................................................ 21
GPIO ................................................................................................................................................................. 21
ADC .................................................................................................................................................................. 21
PWM and FREQ Signal Output on up to Two SIO Pins .................................................................................... 22
nRESET Pin ........................................................................................................................................................... 22
nAutoRUN Pin ...................................................................................................................................................... 22
Two-Wire SWD Programming/Debug Interface .................................................................................................. 22
RM1xx on-board chip antenna characteristics .................................................................................................... 23
Hardware Integration Suggestions .......................................................................................................................... 23
Circuit .................................................................................................................................................................. 23
PCB Layout on Host PCB - General ...................................................................................................................... 25
Antenna Keep-out on Host PCB ....................................................................................................................... 25
Antenna Keep-out and Proximity to Metal or Plastic ...................................................................................... 26
LoRa External Antenna Integration with RM1xx ................................................................................................. 27
Mechanical Details .................................................................................................................................................. 27
RM1xx Mechanical Details .................................................................................................................................. 27
Host PCB Land Pattern and Antenna Keep-out for RM1xx.................................................................................. 28
Application Note for Surface Mount Modules ........................................................................................................ 28
Introduction ......................................................................................................................................................... 28
Shipping ............................................................................................................................................................... 29