
LoRa/BLE Modules
Hardware Integration Guide
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CONTENTS
Overview and Key Features........................................................................................................................................4
Specifications..............................................................................................................................................................5
Hardware Specifications.............................................................................................................................................8
Block Diagram and Pin-out.....................................................................................................................................8
Pin Definitions ........................................................................................................................................................9
Electrical Specifications ....................................................................................................................................... 11
LoRa Power Consumption ....................................................................................................................................... 14
BLE Power Consumption ......................................................................................................................................... 14
BLE Measured Peak Current Waveforms during Connection ............................................................................. 16
Peripheral Block Current Consumption............................................................................................................... 16
Functional Description............................................................................................................................................. 17
Power Management (includes brown-out and power on reset) ........................................................................ 17
Clocks and Timers................................................................................................................................................ 18
Memory for smartBASIC Application Code ......................................................................................................... 18
RF......................................................................................................................................................................... 18
UART Interface .................................................................................................................................................... 18
SPI Bus ................................................................................................................................................................. 19
I2C Interface ........................................................................................................................................................ 20
General Purpose I/O, ADC and PWM/FREQ ........................................................................................................ 20
nRESET Pin ........................................................................................................................................................... 21
nAutoRUN Pin...................................................................................................................................................... 21
Two-Wire SWD Programming/Debug Interface.................................................................................................. 21
RM1xx on-board chip antenna characteristics.................................................................................................... 22
Hardware Integration Suggestions.......................................................................................................................... 22
Circuit .................................................................................................................................................................. 22
PCB Layout on Host PCB - General ...................................................................................................................... 24
LoRa External Antenna Integration with RM1xx ................................................................................................. 26
Mechanical Details .................................................................................................................................................. 26
RM1xx Mechanical Details .................................................................................................................................. 26
Host PCB Land Pattern and Antenna Keep-out for RM1xx.................................................................................. 27
Application Note for Surface Mount Modules ........................................................................................................ 27
Introduction......................................................................................................................................................... 27
Shipping ............................................................................................................................................................... 28
Reflow Parameters .............................................................................................................................................. 28
FCC and IC Regulatory Statements.......................................................................................................................... 30
CE Regulatory .......................................................................................................................................................... 33
EU Declarations of Conformity................................................................................................................................ 35
Ordering Information .............................................................................................................................................. 36
Bluetooth SIG Qualification ..................................................................................................................................... 36
Additional Assistance .............................................................................................................................................. 38