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SAM R34/R35 Low Power LoRa® Sub-GHz System-in-Package Family

Industry’s Lowest Power LoRa SiP for Long Range, Low Power Designs

The SAM R34/R35 is a highly-integrated LoRa® System-in-Package (SiP) family which includes an ultra-low power, high-performance 32-bit microcontroller (MCU), LoRa transceiver and software stack. With certified reference designs, and proven interoperability with major LoRaWAN™ gateway and network providers, the SAM R34/35 SiPs significantly reduce time to market for Internet of Things (IoT) designs.


Why design with the SAM R34 family?

Create Smaller Nodes

  • Integrated 32-bit Arm® MCU and Sub-GHz radio
  • Up to 256 KB Flash and 40 KB RAM
  • Compact 6x6 mm BGA package

Increase Battery Life

  • Ultra-low power 32-bit Arm Cortex® MCU
  • Sleep currents down to 790 nA
  • Low-power RAM with battery back-up

Reduce Your Design Risk

  • Certified development board
  • Chip-down design package
  • Interoperability tested software
  • Trusted supply chain
SAM R34 Hardware Features

Operational and Peripheral Feature Highlights

  • Compact, highly integrated solution
    • Arm Cortex M0+ MCU & LoRa Radio
    • 6x6 mm compact BGA package
    • Up to 256 KB Flash accommodates application code and stack
    • Up to 40 KB RAM including 8KB LP-RAM
  • One full-speed 12 Mbps USB and up to five Serial Communication Interfaces (SERCOM), each configurable as USART, I2C, SPI or LIN
  • 12-bit, 1 Msps Analog-to-Digital Converter (ADC) with up to eight external channels
  • Two analog comparators with window compare function

Radio Feature Highlights

  • Tri-band coverage
    • 137 MHz to 175 MHz
    • 410 MHz to 525 MHz
    • 862 MHz to 1020 MHz
  • Up to 20 dBm (100 mW) max power
  • Up to +13 dBm (20 mW) high-efficiency PA
  • High sensitivity
    • Down to -136 dBm (LoRaWAN™ protocol compliant modes)
    • Down to -148 dBm (proprietary narrowband modes)
  • Up to 168 dB maximum link budget
  • Low RX current of 17 mA (typical)
  • LoRa Technology, (G)FSK, (G)MSK and OOK Modulation
  • Automatic RF Sense and CAD with ultra-fast Automatic Frequency Control (AFC) Packet Engine up to 256 bytes with Cyclic Redundancy Check (CRC)
SAM R34 Software Features

Microchip LoRaWAN™ stack

  • Developed, maintained and supported by Microchip
  • Supports Class A and Class C modes of operation
  • LoRaWAN 1.0.2 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

SAMR34 Block Diagram

Development Ecosystem

The SAMR34-Xpro Development Board (orderable part number: DM320111) is FCC, RED and ISED certified and includes an on-board debugger, current measurement circuitry and extension headers to connect to additional boards. Supported by Atmel Studio Integrated Development Environment and certified chip-down package, this development board greatly simplifies LoRa® end-node development.

Get started in three easy steps:
  1. Download and install Atmel 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 makes 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

Supply Chain and Logistics

  • Container Tracking
  • Cold Chain Monitoring
  • Vehicle Tracking
Smart City

Smart City

  • Street Lighting
  • Waste Management
  • Metering and Leak Detection

SAM R34/R35 Videos