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Ultra-Low-Power LoRa® Solutions for Long-Range, Low-Power Designs


The SAM R34/R35 is a highly integrated family of LoRa technology devices that include an ultra-low-power, a high-performance 32-bit microcontroller (MCU), a LoRa transceiver and a software stack. With their certified reference designs and proven interoperability with major LoRaWAN® gateway and network providers, the SAM R34/35 devices significantly reduce time to market for Internet of Things (IoT) end devices. 

Find everything you need to create your complete LoRa technology end-node solutions here:

Why Design with the SAM R34/35 Family?


Create Smaller Nodes

  • Integrated 32-bit Arm® Cortex®-M0 based MCU and Sub-GHz radio
  • Up to 256 KB Flash and 40 KB RAM
  • Compact 6 × 6 mm BGA package ICs and small 17.5 × 13.5 mm SMT module

Increase Battery Life

  • Ultra-low-power 32-bit Arm Cortex-M0 based MCU
  • Sleep currents down to 790 nA
  • Low-power RAM with battery backup

Reduce Your Design Risk

  • Certified module with u.FL connector
  • Certified IC reference design package
  • Interoperability-tested software
  • Trusted supply chain

Module or IC: What Is the Best Option for Your Design?


WLR089U0 Module

Ultra-Low-Power, Regulatory-Certified Turnkey LoRa Solution

  • Based on the ATSAMR34J18 ultra-low-power IC
  • FCC, IC and RED certified
  • Integrated u.FL antenna connector for ease of use
  • Integrated RF switch to support 868 and 915 MHz bands
  • 256 KB Flash, 40 KB RAM for application and LoRaWAN stack
  • Low power consumption of less than 800 nA with RAM retention
  • Integrated TCXO for higher precision
  • SMT package with castellated pads for easy soldering and visual inspection
  • Compact 17 × 13.5 mm size

SAM R34 LoRa Technology ICs

Ultra-Low-Power and Small LoRa Technology ICs

  • Highly integrated ICs with ultra-low-power Arm Cortex-M0+ based MCU and LoRa technology radio
  • Up to 256 KB Flash and 40 KB RAM to accommodate application code and stack
  • 862 MHz to 1020 MHz coverage with 20 dBm max output power
  • Ultra-low-power sleep modes as low as 790 nA
  • Compact 64-pin 6 × 6 mm BGA package
  • Certified reference design package

WLR089U0 and SAM R34/35 Hardware Features


WLR089U0 and SAM R34/35 Software Features

Microchip LoRaWAN stack:

  • Developed, maintained and supported by Microchip
  • Supports Class A and Class C modes of operation
  • LoRaWAN 1.0.4 regional parameters
  • Multi-region support: US915, EU868, AS923, AU915, KR920, IN865 bands supported
  • Proven operation with leading network providers including Actility, Senet, The Things Network and Everynet

Development Ecosystem

The WLR089 Xplained Pro Development Kit (EV23M25A) integrates the FCC-, RED- and ISED-certified WLR089U0 module and includes an on-board debugger, current measurement circuitry and extension headers to connect to additional boards. Supported by Atmel Studio Integrated Development Environment (IDE), software examples and a LoRaWAN stack, this development board greatly simplifies the development of LoRa technology end nodes.

Follow These Three Easy Steps to Get Started:

  1. Download and install Microchip Studio Integrated Development Environment
  2. Connect DEBUG USB on the kit to your computer
  3. Select example demos from Advanced Software Framework (ASF)

Markets and Applications


The SAM R34/R35 family’s ultra-low power performance combined with rich set of radio and peripheral features make it ideal for a variety of long-range applications where longevity of battery life is of paramount importance.

Smart Agriculture

  • Cattle Tracking
  • Irrigation Monitoring
  • Smart Tractors

Supply Chain and Logistics

  • Container Tracking
  • Cold Chain Monitoring
  • Vehicle Tracking

Smart City

  • Street Lighting
  • Waste Management
  • Metering and Leak Detection

The Industry’s Lowest-Power LoRa® System-in-Package

Accelerate development of remote IoT nodes with the industry’s lowest-power LoRa® System-in-Package family

Development Tools


WLR089 Xplained Pro Development Kit

Part Number: EV23M25A

This kit integrates the FCC-, RED- and ISED-certified WLR089U0 module and includes an on-board debugger, current measurement circuitry and extension headers to connect to additional boards. Supported by Microchip Studio Integrated Development Environment (IDE), software examples and a LoRaWAN stack, this development board greatly simplifies the development of LoRa technology end nodes.

SAM R34 Xplained Pro Evaluation Kit

Part Number: DM320111

The SAM R34 Xplained Pro is a hardware platform designed to evaluate the SAM R34 family of LoRa devices. This FCC-, ISED- and RED-certified board is not only an evaluation platform but also an excellent reference design for developing SAM R34-based LoRa end-node applications.

Microchip Studio Integrated Development Environment (IDE)

Microchip Studio is an Integrated Development Platform (IDP) for developing and debugging AVR® and SAM microcontroller applications. It merges all of the great features and functionality of Atmel Studio into our well-supported portfolio of development tools to give you a seamless and easy-to-use environment for writing, building and debugging your applications written in C/C++ or assembly code. 

SAM R34/R35 ICs and Modules

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