Silicon Labs EFR32MG22 Mighty Gecko Wireless SoCs
Silicon Labs EFR32MG22 Mighty Gecko Wireless SoCs are BLUETOOTH® low energy (LE) wireless devices part of the Gecko Series 2 platform. The Silicon Labs EFR32MG22 SoCs offer ultra-low power consumption (4.1mA TX at 0dBm, 3.6mA RX) and a high-performance Arm® Cortex®-M33 core (27µA/MHz active, 1.2µA sleep), extending coin cell battery life up to ten years. Target applications include Bluetooth mesh low-power nodes, smart door locks, personal healthcare and fitness devices, asset tracking tags, beacons, and indoor navigation. The SoCs have versatile Bluetooth Angle of Arrival (AoA), Angle of Departure (AoD) capabilities, and sub-one-meter location accuracy.
Features
- Low-power wireless System-on-Chip
- High-performance 32-bit 76.8MHz ARM Cortex-M33 with DSP instruction and floating-point unit for efficient signal processing
- Up to 512kB flash program memory
- Up to 32kB RAM data memory
- 2.4GHz radio operation
- Radio performance
- -106.7dBm sensitivity @ 125kbps GFSK
- -98.9dBm sensitivity @ 1Mbit/s GFSK
- -96.2dBm sensitivity @ 2Mbit/s GFSK
- TX power up to +6dBm
- 2.5mA radio receive current
- 3.4mA radio transmit current @ 0dBm output power
- 7.5mA radio transmit current @ 6dBm output power
- Wide selection of MCU peripherals
- 16-bit Analog to Digital Converter (ADC)
- Up to 26 general-purpose I/O pins with output state retention and asynchronous interrupts
- 8-channel DMA controller
- 12-channel Peripheral Reflex System (PRS)
- 4 × 16-bit timer/counter with 3 compare/capture/PWM channels
- 1 × 32-bit timer/counter with 3 compare/capture/PWM channels
- 32-bit real-time counter
- 24-bit low energy timer for waveform generation
- 1 × Watchdog timer
- 2 × Universal Synchronous/Asynchronous Receiver/Transmitter (UART/SPI/SmartCard (ISO 7816)/IrDA/I2S)
- 1 × Enhanced Universal Asynchronous Receiver/Transmitter (EUART)
- 2 × I2C interface with SMBus support
- Digital microphone interface (PDM)
- Precision low-frequency RC oscillator to replace 32kHz sleep crystal
- RFSENSE with selective OOK mode
- Die temperature sensor with +/-1.5°C accuracy after single-point calibration
- Low system energy consumption
- 3.6mA RX current (1Mbps GFSK)
- 4.1mA TX current @ 0dBm output power
- 8.2mA TX current @ 6dBm output power
- 27μA/MHz in Active Mode (EM0) at 76.8MHz
- 1.40μA EM2 DeepSleep current (32KB RAM retention and RTC running from LFXO)
- 1.75μA EM2 DeepSleep current (32kB RAM retention and RTC running from a precision LFRCO)
- 0.17μA EM4 current
- Supported modulation format
- 2 (G)FSK with fully configurable shaping
- OQPSK DSSS
- (G)MSK
- Protocol support
- Bluetooth Low Energy (Bluetooth 5.4)
- Direction finding using Angle-of-Arrival (AoA) and Angle-of-Departure (AoD)
- Bluetooth mesh low power node (512kB parts only)
- Proprietary
- Wide operation range
- 1.71V to 3.8V single power supply
- -40°C to 125°C
- Packages
- QFN40 5mm × 5mm × 0.85mm (AEC-Q100 certified options available)
- QFN32 4mm ×4mm × 0.85mm (AEC-Q100 certified options available)
- TQFN32 4mm × 4mm × 0.30mm
- BG22 security features
- Secure boot with Root of Trust and Secure Loader (RTSL)
- Hardware cryptographic acceleration for AES128/256, SHA-1, SHA-2 (up to 256-bit), ECC (up to 256-bit), ECDSA, and ECDH
- True Random Number Generator (TRNG) compliant with NIST SP800-90 and AIS-31
- ARM TrustZone®
- Secure debug with lock/unlock
Block Diagram
Development Tools
Silicon Labs xG22 Development Tools
Based on the EFR32xG22 SoCs with IoT connectivity, delivering an optimized combination of features.
Silicon Labs EFR32xG22 Wireless Gecko Starter Kit
Everything needed to create a mesh network and evaluate the EFR32xG22 Series 2 Wireless Gecko SoCs.
Silicon Labs EFR32xG22 Wireless Gecko Radio Boards
Features the EFR32xG22 Wireless Gecko Wireless SoC.
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Single-die solution with BLUETOOTH® 5 Direction Finding, 76.8MHz Arm® Cortex®-M33 and 2.4GHz radio.
Silicon Labs EFR32FG22 Flex Gecko Wireless SoCs
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Silicon Labs EFR32FG22E Wireless Gecko SoCs
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Silicon Labs EFR32MG22E Wireless Gecko SoCs
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Series 2 Family
Silicon Labs Wireless Series 2
Silicon, software, and tools for smart home, commercial, consumer, and industrial applications.