EFR32BG22 Series 2 Bluetooth® Wireless SoC

Low Power Wireless System-on-Chip

• High Performance 32-bit 76.8 MHz ARM Cortex®-M33 with DSP instruction and floating-point unit for efficient signal processing
• Up to 512 kB flash program memory
• Up to 32 kB RAM data memory
• 2.4 GHz radio operation

Radio Performance

• -106.7 dBm sensitivity @ 125 kbps GFSK
• -98.9 dBm sensitivity @ 1 Mbit/s GFSK
• -96.2 dBm sensitivity @ 2 Mbit/s GFSK
• TX power up to 6 dBm
• 2.5 mA radio receive current
• 3.4 mA radio transmit current @ 0 dBm output power
• 7.5 mA radio transmit current @ 6 dBm output power

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
• 1.40 μA EM2 DeepSleep current (32 kB RAM retention and RTC running from LFXO)
• 1.75 μA EM2 DeepSleep current (32 kB RAM retention and RTC running from a precision LFRCO)
• 0.17 μA EM4 current

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 32 kHz sleep crystal
• RFSENSE with selective OOK mode
• Die temperature sensor with +/-1.5 °C
  accuracy after single-point calibration

Supported Modulation Format

• (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
  (512 kB parts only)
• Proprietary

Wide Operation Range

• 1.71 V to 3.8 V single power supply
• -40 °C to 125 °C

Packages

• QFN40 5 mm × 5 mm × 0.85 mm
• QFN32 4 mm × 4 mm × 0.85 mm
• TQFN32 4 mm × 4 mm × 0.30 mm

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