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Silicon Labs EFR32BG22L BLUETOOTH® LE SoCs

Silicon Labs EFR32BG22L BLUETOOTH® LE SoCs are ideal for enabling energy-friendly Bluetooth networking for IoT devices. The single-die solution combines a 38.4MHz Cortex®-M33 with a high-performance 2.4GHz radio to provide an industry-leading, energy-efficient wireless SoC for IoT-connected applications. These modules feature up to 352kB of Flash and 24kB of RAM, an energy-efficient radio core with low active and sleep currents, an integrated PA with up to 6dBm (2.4GHz) TX power, and a secure boot with Root of Trust and Secure Loader (RTSL). The Silicon Labs EFR32BG22L Bluetooth LE SoCs are designed for various applications, including asset tags, beacons, remote controls, portable medical devices, Bluetooth mesh low-power nodes, sports, fitness, and wellness devices, rearview mirrors, and garage door openers.

Features

  • 32-bit Arm® Cortex-M33 core with 38.4MHz maximum operating frequency
  • Up to 352kB of Flash and 24kB of RAM
  • Energy-efficient radio core with low active and sleep currents
  • Integrated PA with up to 6dBm (2.4GHz) TX power
  • Secure boot with Root of Trust and Secure Loader (RTSL)

Applications

  • Asset tags and beacons
  • Remote controls
  • Portable medical
  • Bluetooth mesh low-power nodes
  • Sports, fitness, and wellness devices
  • Rearview mirrors
  • Garage door openers

Specifications

  • Low-power wireless System-on-Chip (SoC)
    • High-performance 32-bit 38.4MHz Arm Cortex-M33 with DSP instructions and floating-point unit for efficient signal processing
    • Up to 352kB flash program memory
    • Up to 24kB of RAM data memory
    • 2.4GHz radio operation
  • Radio performance
    • -106.7dBm sensitivity at 125kbps GFSK
    • -98.9dBm sensitivity at 1Mbit/s GFSK
    • -96.2dBm sensitivity at 2Mbit/s GFSK
    • TX power up to 6dBm
    • 2.5mA radio receive current
    • 3.4mA radio transmit current at 0dBm output power
    • 7.5mA radio transmit current at 6dBm output power
  • Low system energy consumption
    • 3.6mA RX current (1Mbps GFSK)
    • 4.1mA TX current at 0dBm output power
    • 8.2mA TX current at 6dBm output power
    • 26μA/MHz in active mode (EM0) at 38.4MHz
    • 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 precision LFRCO)
    • 0.17μA EM4 current
  • Supported modulation format
    • Two (G)FSK with fully configurable shaping
    • OQPSK DSSS
    • (G)MSK
  • Protocol support
    • Bluetooth low energy
    • Proprietary
  • 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
  • Wide selection of MCU peripherals
    • Analog-to-Digital Converter (ADC)
      • 12-bit at 1Msps
      • 16-bit at 76.9ksps
    • Up to 18 general-purpose I/O (GPIO) pins with output state retention and asynchronous interrupts
    • Eight-channel DMA controller
    • 12-channel Peripheral Reflex System (PRS)
    • Four 16-bit timers/counters with three compare/capture/PWM channels
    • One 32-bit timer/counter with three compare/capture/PWM channels
    • 32-bit real-time counter
    • 24-bit low-energy timer for waveform generation
    • One watchdog timer
    • Two Universal Synchronous/Asynchronous Receiver/Transmitter (UART/SPI/SmartCard (ISO 7816)/IrDA/I2S)
    • One Enhanced Universal Asynchronous Receiver/Transmitter (EUART)
    • Two I2C interfaces 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
  • Wide operating range
    • 1.71V to 3.8V single power supply
    • -40°C to +85°C
  • QFN32 4mm × 4mm × 0.85mm package

Block Diagram

Block Diagram - Silicon Labs EFR32BG22L BLUETOOTH® LE SoCs

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Publicado: 2025-04-23 | Actualizado: 2025-12-19