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 RAM 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 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 80 512 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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