EFR32BG27 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 768 kB flash program memory
• Up to 64 kB RAM data memory
• 2.4 GHz radio operation

Radio Performance

• -106.9 dBm sensitivity @ 125 kbps GFSK
• -99.2 dBm sensitivity @ 1 Mbit/s GFSK
• -96.3 dBm sensitivity @ 2 Mbit/s GFSK
• TX power up to +8 dBm

Low System Energy Consumption

• 3.6 mA RX current (1 Mbps GFSK)
• 4.1 mA TX current @ 0 dBm output power
• 9.2 mA TX current @ 6 dBm output power
• 11.3 mA TX current @ 8 dBm output power
• 29 μA/MHz in Active Mode (EM0) at 76.8 MHz
• 1.6 μA EM2 DeepSleep current (64 kB RAM retention and RTC running from LFRCO)
• 0.18 μA EM4 current

Wide Selection of MCU Peripherals

• 16-bit Analog to Digital Converter (IADC)
• Analog Comparator (ACMP)
• 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)
• 3 × 16-bit Timer/Counter with 3 Compare/Capture/PWM channels
  
• 2 × 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
• Coulomb counter integrated into DC-DC

Supported Modulation Format

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

Protocol Support

• Bluetooth Low Energy (Bluetooth 5.4)
• Bluetooth mesh
• Proprietary

Wide Operation Range

• 1.8 V to 3.8 V single power supply for devices with Buck DC-DC
• 0.8 V to 1.7 V single power supply for devices with Boost DC-DC
  
• -40 °C to 125 °C

Packages

• QFN40 5 mm × 5 mm × 0.85 mm
• QFN32 4 mm × 4 mm × 0.85 mm
• WLCSP39 2.3 mm x 2.6 mm x 0.5 mm

BG27 Security Features

• Secure Boot with Root of Trust 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
• DPA Countermeasures
• Customer Key Management with PUF
• True Random Number Generator (TRNG)compliant with NIST SP800-90 and AIS-31
• ARM® TrustZone®
• Secure Debug with lock/unlock
• External Tamper Detect