Industry’s smallest IEEE® 802.15.4TM compliant Sub-GHz module by Microchip is now available

August 26, 2019 Mouser announced to stock Microchip’s ATSAMR30M18A sub-GHz RF module. This RF module is based on a Microchip SAMR30E18A SiP ( System in Package) with a 32-bit ARM Cortex-M0+ core and a sub-GHz radio in a single 5 mm x 5 mm QFN package which is combined with all other necessary components, such as a 16 MHz crystal oscillator, discrete balun, lumped element harmonic reject filter and RF shielding. The whole module is housed in a 12.7 mm x 11 mm package that is ideal for space-limited designs and battery-powered applications.

The Pin Assignment of Microchip’s Ultra-Low-Power Sub-GHz RF Module ATSAMR30M18

The built-in ARM Cortex-M0+ core combined with the large 256 Kbytes of flash and 40 Kbytes of RAM provides flexibility for designing functional devices. The SAM R30 SiP typically draws less than 500 nA at 1.8V battery supply with wake on serial communication, real time counter or GPIOs, best for ultra-low power WPAN applications. The sub-GHz RF module is designed for use in unlicensed sub-1GHz frequency bands worldwide, including China’s 780 MHz, Europe’s 868 MHz and North America’s 915 MHz. It delivers RX sensitivity up to -105 dBm and TX output power up to +8.7 dBm.

The Block Diagram of ATSAMR30M18A Sub-1GHz RF Module

Compared to 2.4 GHz devices using same amount of power, the SAM R30 module provides twice the connectivity range and better communications through blockades. The other features offered by ATSAMR30M18A module include:

  • 16 I/O pins
  • 128-bit AES (Advanced Encryption Standard) crypto engine
  • 32-bit MAC (Medium Access Control) symbol counter
  • Automatic retransmission modes
  • Single 1.8-3.6V supply
  • FCC/ETSI compliant RF front end with a harmonic filter
  • Two Serial Communication interface (SERCOM) units for external applications
  • High precision 16 MHz crystal oscillator
  • 12-bit, 350 ksps A-nalog-to-Digital converter (ADC)
  • I2C up to 3.4 MHz
  • USB 2.0 interface

The ultra-low-power feature of SAM R30 Sub-GHz module makes it excellent for many applications, such as Internet of Things (IoT), wireless networked sensors, home automation controls, smart city and industrial control applications.

Microchip Reference Design for Ultra-Low-Power Sub-GHz RF Module ATSAMR30M18A
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