EFR32BG22L Series 2 Bluetooth® Wireless SoC

Low Power Wireless System-on-Chip

• High Performance 32-bit 38.4 MHz ARM Cortex®-M33 with DSP instruction and floating-point unit for efficient signal processing
• Up to 352 kB flash program memory
• Up to 24 kB RAM data memory
• 2.4 GHz radio operation

Radio Performance

• -98.9 dBm sensitivity @ 1 Mbit/s GFSK
• TX power up to +6 dBm

Low System Energy Consumption

• 3.6 mA RX current (1 Mbps GFSK)
• 4.1 mA TX current @ 0 dBm output power
• 8.2 mA TX current @ 6 dBm output power
• 27 μA/MHz in Active Mode (EM0) at 76.8 MHz
• 1.20 μA EM2 DeepSleep current (8 kB RAM retention)
• 0.17 μA EM4 current

Wide Selection of MCU Peripherals

• 16-bit Analog to Digital Converter (ADC)
  
• Up to 18 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
• 1 × Universal Synchronous/Asynchronous Receiver/Transmitter (UART/SPI/SmartCard (ISO 7816)/IrDA/I2S)
• 1 × Enhanced Universal Asynchronous Receiver/Transmitter (EUART)
• 1 × I2C interface with SMBus support
• Digital microphone interface (PDM)
• Precision Low-Frequency RC Oscillator to replace 32 kHz sleep crystal
• RFSENSE with selective OOK mode
• Die temperature sensor with +/-1.5 °C
  accuracy after single-point calibration

Supported Modulation Format

• 2 (G)FSK with fully configurable shaping
• OQPSK DSSS
• (G)MSK

Protocol Support

• Bluetooth Low Energy (Bluetooth 5.4)
• Direction finding (AoA Transmitter)
  
• Bluetooth mesh

Wide Operation Range

• 1.71 V to 3.8 V single power supply
• -40 °C to 85 °C

Packages

• QFN32 4 mm ×4 mm × 0.85 mm

Security Features

• Secure Vault™ Mid