EM359x System-on-Chips (SoCs) and Networking Co- Processors for Zigbee and Thread

EM359x devices for Zigbee and Thread are the industry’s leading ARM® Cortex®-M3 based family of mesh networking SoCs, delivering unmatched performance, power consumption and code density in a compact package. EM359x SoCs combine a 2.4 GHz IEEE 802.15.4 radio transceiver with a 32-bit microprocessor, flash memory and RAM with powerful hardware-supported, network-level debugging features. Tightly integrated with our Zigbee and Thread mesh networking service, these devices and mesh networking tools simplify development and accelerate time to market.

Due to the evolution of the Zigbee protocol, Flash and RAM requirements have increased.  We recommend migrating to EFR32MG devices with more Flash and Memory to future proof designs:

  • EFR32MG13 for battery-powered Zigbee or Thread applications
  • EFR32MG12 for Zigbee, Thread and multiprotocol applications
  • EFR32MG21 for mains powered mesh applications including lighting, gateways and voice assistants

EM359x Common Specs

  • Industry leading ARM Cortex-M3 based family of mesh networking SoCs for Zigbee and Thread
  • Lowest deep sleep current and multiple sleep modes
  • Exceptional RF performance
  • Flexible antenna interface allows easy antenna connection with or without PA
  •  Built-in memory protection
  • AES 128 hardware encryption engine with true random number generator
  • Flash: 256 kB and 512 kB variants available
  • RAM: 32 kB and 64 kB variants available
  • Up to 32 GPIO and 4 serial ports on EM359x
  • Hardware supported network level debugging with packet trace port


Find the Right EM359x Device Select Columns
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Part Number MCU Core Frequency Flash RAM Frequency Range Adj Channel Rejection (15.4) 2nd Adj Channel Rejection +12/-13 MHz 802.11g Rejection Deep Sleep Current RX Current TX Current Crystal Frequency Temperature Range (ºC) Voltage USB GPIO Package Type Receive Sensitivity TX Power
ARM Cortex-M3 24 512 64 2400 2500 46 46 36 1.08 (no timer) 26.5 31 (normal @ +3 dBm) 24 -40 85 2.1 3.6 32 QFN56 -102 (boost) -55 8
ARM Cortex-M3 24 512 64 2400 2500 46 46 36 1.08 (no timer) 26.5 31 (normal @ +3 dBm) 24 -40 85 2.1 3.6 32 QFN56 -102 (boost) -55 8

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