EFR32BG24L Series 2 Bluetooth® Wireless SoC

Low Power Wireless System-on-Chip

• High-performance 32-bit 78.0 MHz ARM Cortex®-M33 with DSP instruction and floating-point unit for efficient signal processing
• Up to 768 kB flash program memory
• Up to 96 kB RAM data memory
• 2.4 GHz radio operation

Radio Performance

• -97.6 dBm RX sensitivity @ 1 Mbit/s GFSK
• TX power up to +10 dBm

Low System Energy Consumption

• 33.4 μA/MHz in Active Mode (EM0) at 39.0 MHz
• 1.3 μA EM2 DeepSleep current (16 kB RAM retention and RTC running from LFRCO))
• 4.4 mA RX current (1 Mbps GFSK)
• 5 mA TX current @ 0 dBm outputpower
• 19.1 mA TX current @ 10 dBm output power

Wide Selection of MCU Peripherals

• Analog to Digital Converter (IADC)
  • 12-bit @ Msps or 16-bit @ 76.9 ksps
  • Select OPNs support High Speed Mode (up to 2 Msps) and High Accuracy Mode (up to 16-bits ENOB at 3.8 ksps)
    
• 2x Analog Comparator (ACMP)
• 2x Digital Analog Converter (VDAC)
  
• Up to 26 General Purpose I/O pins with output state retention and asynchronous interrupts
• 8 Channel DMA Controller (LDMA)
• 16 Channel Peripheral Reflex System (PRS)
• 3 × 16-bit Timer/Counter with 3 Compare/Capture/PWM channels (TIMER2/3/4)
• 2 × 32-bit Timer/Counter with 3 Compare/Capture/PWM channels (TIMER0/1)
• 2x 32-bit 32-bit Real Time Counter (SYSRTC/BURTC)
  
• 24-bit Low Energy Timer for waveform generation (LETIMER)
• 16-bit Pulse Counter with asynchronous operation (PCNT)
  
• 2 × Watchdog Timer (WDOG)
• 1 × Universal Synchronous/Asynchronous Receiver/Transmitter (USART), supporting UART/SPI/SmartCard (ISO 7816)/IrDA/I2S
• 1 × Enhanced Universal Synchronous/Asynchronous Receiver/Transmitter (EUSART) supporting UART/SPI/DALI/IrDA
  
• 1 × I2C interface with SMBus support
• Precision Low-Frequency RC Oscillator with precision mode to replace 32 kHz sleep crystal (LFRCO)
• Keypad scanner supporting up to 6x8 matrix (KEYSCAN)
  
• Die temperature sensor with +/- 1.5 °C accuracy after single-point calibration

Supported Modulation Format

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

Protocol Support

• Bluetooth Low Energy (Bluetooth 5.4)
• Direction finding using Angle-of-Arrival (AoA) and Angle-of-Departure (AoD)
• Bluetooth mesh
• Channel Sounding

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

Security Features

• Secure Vault™ Mid