EFR32BG24 Series 2 Bluetooth® Wireless SoC

The EFR32BG24 Wireless SoCs are ideal for IOT wireless connectivity using Bluetooth Low Energy and Bluetooth mesh for smart home, lighting, and portable medical products. With key features like high performance 2.4 GHz RF, low current consumption, an AI/ML hardware accelerator and Secure Vault™, IoT device makers can create the smart, robust, and energy-efficient products that are secure from remote and local cyber-attacks. An ARM Cortex®-M33 running up to 78 MHz and up to 1.5 MB of Flash and 256 kB of RAM provides resources for demanding applications while leaving room for future growth. Target applications include gateways/hubs, sensors, switches, door locks, smart plugs, LED bulbs, luminaires, blood glucose meters and pulse oximeters.

Supports Bluetooth 5.3, Bluetooth mesh & proprietary
Ideal for low-power battery-powered IoT devices

EFR32BG24 Common Specs

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 1536 kB flash program memory
  • Up to 256 kB RAM data memory
  • 2.4 GHz radio operation

Radio Performance

  • -105.7 dBm sensitivity @ 125 kbps GFSK
  • -97.6 dBm sensitivity @ 1 Mbit/s GFSK
  • -94.8 dBm sensitivity @ 2 Mbit/s GFSK
  • TX power up to 19.5 dBm

Low System Energy Consumption

  • 4.4 mA RX current (1 Mbps GFSK)
  • 5 mA TX current @ 0 dBm output power
  • 19.1 mA TX current @ 10 dBm output power
  • 156.8 mA TX current @ 19.5 dBm output power
  • 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)

Wide Selection of MCU Peripherals

  • Analog to Digital Converter (IADC)
    • 12-bit @ 1 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)
  • 2 × Analog Comparator (ACMP)
  • 2 × Digital to Analog Converter (VDAC)
  • Up to 32 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)
  • 32-bit Real Time Counter (SYSRTC)
  • 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
  • 2 × Enhanced Universal Synchronous/Asynchronous Receiver/Transmitter (EUSART) supporting UART/SPI/DALI/IrDA
  • 2 × I2C interface with SMBus support
  • 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 5.3)
  • Bluetooth mesh
  • 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
  • QFN48 6 mm × 6 mm × 0.85 mm

 

Securing Your IoT Product

IoT security is key to protecting company brands, end user privacy and commercial viability of products. Vulnerabilities can be exploited through both remote Internet attacks and physical hands-on-attacks.

Developers using the Silicon Labs wireless product portfolio including those in the EFR32BG24 portfolio have access to a number of technologies designed to protect their product, including Secure Debug, Secure Boot with Root of Trust & Secure Loader.

BG24 Security Features

 

Whitepaper: Preparing for Next-Gen Cyber Attacks on IoT

Status

Find the Right EFR32BG24 Device Select Columns
Select Columns
Part Number MCU Core Core Frequency (MHz) Flash RAM Secure Vault AI/ML Acceleration Bluetooth Bluetooth Mesh Cryptography Output Power Range (dBm) GPIO I²C SPI I²S Timers (16-bit) Temperature Range ºC Package Type Package Size (mm)
ARM Cortex-M33 78 1536 256 High 5.3 AES-128 AES-256 ECC SHA-1 SHA-2 -20 10 28 2 3 1 3 -40 125 QFN48 6x6
ARM Cortex-M33 78 1024 128 High 5.3 AES-128 AES-256 ECC SHA-1 SHA-2 -20 10 32 2 3 1 3 -40 125 QFN48 6x6
ARM Cortex-M33 78 1024 128 High 5.3 AES-128 AES-256 ECC SHA-1 SHA-2 -20 19.5 32 2 3 1 3 -40 125 QFN48 6x6
ARM Cortex-M33 78 1024 128 Mid 5.3 AES-128 AES-256 ECC SHA-1 SHA-2 -20 10 26 2 3 1 3 -40 125 QFN40 5x5
ARM Cortex-M33 78 1024 128 Mid 5.3 AES-128 AES-256 ECC SHA-1 SHA-2 -20 10 32 2 3 1 3 -40 125 QFN48 6x6
ARM Cortex-M33 78 1024 128 Mid 5.3 AES-128 AES-256 ECC SHA-1 SHA-2 -20 19.5 26 2 3 1 3 -40 125 QFN40 5x5
ARM Cortex-M33 78 1024 128 Mid 5.3 AES-128 AES-256 ECC SHA-1 SHA-2 -20 19.5 32 2 3 1 3 -40 125 QFN48 6x6

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