EFR32™ Mighty Gecko Series 2 Multiprotocol Wireless SoC

Bringing high performance, low power and secure solutions to the Internet of Things

Wireless Gecko Series 2 devices are the next evolution of Wireless Gecko devices that are designed to increase processing capability, improve RF performance and lower active current, while providing a higher level of security.

The first family of devices in Series 2 are EFR32MG21, a 2.4 GHz wireless SoC optimized for line-powered Zigbee, Thread and Bluetooth mesh applications, including connected lighting, gateways, voice assistants and smart metering. An 80 MHz ARM® Cortex®-M33 core provides plenty of processing capability while a dedicated security core that provides faster encryption, secure boot loading, and debug access control. With better than -104 sensitivity for both 802.15.4 and Bluetooth Long Range and up to +20 dBm output power, the EFR32MG21 provides a robust RF link to ensure reliable communications. And finally the Series 2 uses the same tools as Series 1, providing easy migration and fast time-to-market with development kits, SDKs, mobile apps, and Silicon Labs patented network analyzer.

Features

Zigbee and Thread Radio

  • 2.4 GHz IEEE 802.15.4
  • 250 kbps O-QPSK DSSS
  • Excellent Receive Sensitivity:
    • -104.5 dBm @250 kbps O-QPSK DSSS
  • Programmable Output Power: +20 dBm
  • Active Mode RX: 9.4 mA
  • Active Mode TX: 10.5 mA @0 dBm to Active Mode TX: 9.8 mA @0 dBm
  • Active Mode TX: 33.1 mA @10 dBm to Active Mode TX: 33.8 mA @10 dBm

Bluetooth® Low Energy Radio

  • Compatible with Bluetooth 5, Bluetooth 5.1 and Bluetooth mesh specification
  • Excellent Receive Sensitivity:
    • -105.1 dBm @125 kbps GFSK to -104.9 dBm @125 kbps GFSK
    • -97.5 dBm @1 Mbps GFSK
    • -94.4 dBm @2 Mbps GFSK
  • Programmable Output Power: Up to +20 dBm
  • Active Mode RX: 8.8 mA
  • Active Mode TX: 10.5 mA @ 0 dBm to Active Mode TX: 9.8 mA @0 dBm
  • Active Mode TX: 33.1 mA @10 dBm to Active Mode TX: 33.8 mA @ 10 dBm

Rich Analog and Digital Peripherals

  • 12-bit 1 Msps SAR Analog to Digital Converter (ADC)
  • Analog Comparators (ACMP)
  • 8 Channel DMA Controller
  • Peripheral Reflex System (PRS)
  • PTA (Packet Traffic Arbitration) for Wi-Fi Coexistence
  • 16-bit Timer/Counters
    • 3 Compare/Capture/PWM channels per Timer
  • 32-bit Timer/Counter
    • 3 Compare/Capture/PWM channels per Timer
  • 32-bit Real Time Counter
  • 24-bit Low Energy Timer for waveform generation
  • Watchdog Timers
  • Universal Synchronous/Asynchronous Receiver/Transmitter (UART/SPI/SmartCard(ISO 7816)/IrDA/I2S)
  • 2C interface with SMBus support
  • Up to 20 General Purpose I/O pins
    • Output state retention and asynchronous interrupts

Powerful MCU & Memory Options

  • ARM® Cortex®-M33
    • DSP and Floating Point Unit
  • Up to 80 MHz Clock Speed
  • Low Active Mode Current: 50.9 µA/MHz
  • Up to 1024 kB of Programmable Flash
  • Up to 96 kB RAM

Package Options

  • QFN32 (4 mm x 4 mm)

Security

  • Hardware Cryptographic Acceleration
    • AES (128/192/256), SHA-1, SHA-2 (SHA-224/SHA256), ECC (256-bit), ECDSA (256-bit) and ECDH (p192, p256), HMAC, J-PAKE
  • True Random Number Generator (TRNG)
  • Secure Boot
  • Secure Debug / Debug Access Control
  • Unique ID

Get Started with a Zigbee and Thread Development

Wireless Gecko Series 2 Starter Kit

The easiest way to begin development with EFR32 Blue Gecko Bluetooth Low Energy IC family is with the Wireless Gecko Starter Kit.

Add to Cart


Mighty Gecko Series 2 Product Matrix

Status
Devices
Part Number Data Sheet Kit MCU Core Frequency (MHz) Flash (kB) RAM (kB) Cryptography Output Power Range (dBm) Receive Sensitivity GPIO RX Current (mA) TX Current (mA @ 0 dBm) UART USART LEUART I²C SPI I²S ADC Comparators DAC Timers (16-bit) Temperature Range ºC Package Type Package Size Wireless Standards Multiprotocol
SLWSTK6006A ARM Cortex-M33 80 1024 96 AES-256 ECC SHA-1 SHA-2 -20 20 -104 (250 kbps O-QPSK DSSS) 20 9.4 0 3 3 0 2 3 3 12-bit, SAR, 1 Msps 2 7 -40 125 QFN32 4x4 Bluetooth Thread Zigbee Dynamic Switched Programmable
SLWSTK6006A ARM Cortex-M33 80 512 64 AES-256 ECC SHA-1 SHA-2 -20 10 -104 (250 kbps O-QPSK DSSS) 20 9.4 0 3 3 0 2 3 3 12-bit, SAR, 1 Msps 2 7 -40 125 QFN32 4x4 Bluetooth Thread Zigbee Dynamic Switched Programmable
SLWSTK6006A ARM Cortex-M33 80 768 64 AES-256 ECC SHA-1 SHA-2 -20 10 -104 (250 kbps O-QPSK DSSS) 20 9.4 0 3 3 0 2 3 3 12-bit, SAR, 1 Msps 2 7 -40 125 QFN32 4x4 Bluetooth Thread Zigbee Dynamic Switched Programmable
SLWSTK6006A ARM Cortex-M33 80 1024 96 AES-256 ECC SHA-1 SHA-2 -20 20 -104 (250 kbps O-QPSK DSSS) 20 9.4 0 3 3 0 2 3 3 12-bit, SAR, 1 Msps 2 7 -40 125 QFN32 4x4 Bluetooth Thread Zigbee Dynamic Switched Programmable
SLWSTK6006A ARM Cortex-M33 80 512 64 AES-256 ECC SHA-1 SHA-2 -20 20 -104 (250 kbps O-QPSK DSSS) 20 9.4 0 3 3 0 2 3 3 12-bit, SAR, 1 Msps 2 7 -40 125 QFN32 4x4 Bluetooth Thread Zigbee Dynamic Switched Programmable
SLWSTK6006A ARM Cortex-M33 80 768 64 AES-256 ECC SHA-1 SHA-2 -20 20 -104 (250 kbps O-QPSK DSSS) 20 9.4 0 3 3 0 2 3 3 12-bit, SAR, 1 Msps 2 7 -40 125 QFN32 4x4 Bluetooth Thread Zigbee Dynamic Switched Programmable
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