EFR32BG21 Series 2 Bluetooth® Wireless SoC

Wireless Gecko Series 2 devices are the next evolution of Wireless Gecko devices bringing high performance, low power, and secure solutions to the Internet of Things. Designed to increase processing capability, improve RF performance and lower active current, the devices also provide the highest level of IoT device security. The EFR32BG21B devices are also designed to support Silicon Labs' enhanced security option, Secure Vault. More information on Silicon Labs' security portfolio can be found here.

EFR32BG21 devices are 2.4 GHz wireless SOCs optimized for line-powered Bluetooth Low Energy and Bluetooth mesh applications, including connected lighting, smart plugs, gateways and voice assistants. An 80 MHz ARM® Cortex®-M33 core provides plenty of processing capability while an integrated security subsystem provides leading security features that greatly reduce the risk of IoT security breaches and compromised intellectual property. With better than -104 dBm sensitivity and up to +20 dBm output power, the EFR32BG21 family uses Simplicity Studio 5 development tools, providing easy migration and fast time-to-market with development kits, SDKs, mobile apps, our energy profiler and patented network analyzer.

Bluetooth 5.1 & Bluetooth Mesh Support
Highest level of IoT Security
Secure Vault

EFR32BG21 Common Specs

Bluetooth Low Energy Radio

  • Compatible with Bluetooth 5, Bluetooth 5.1 and Bluetooth mesh specification
  • Excellent receive sensitivity:
    • 104.9 dBm @125 kbps GFSK
    • -97.5 dBm @1 Mbps GFSK
    • -94.4 dBm @2 Mbps GFSK
  • Programmable output power: Up to +20 dBm
  • Active mode RX: 8.8 mA
  • Active mode TX: 9.3 mA @ 0 dBm
  • Active mode TX: 33.8 mA @ 10 dBm

Rich Analog and Digital Peripherals

  • 12-bit 1 Msps SAR Analog to Digital Converter (ADC)
  • Analog Comparators (ACMP)
  • 8 Channel DMA Controller
  • Peripheral Reflex System (PRS)
  • PTA (Packet Traffic Arbitration) for Wi-Fi Coexistence
  • 16-bit Timer/Counters
    • 3 Compare/Capture/PWM channels per Timer
  • 32-bit Timer/Counter
    • 3 Compare/Capture/PWM channels per Timer
  • 24-bit Low Energy Timer for waveform generation
  • Watchdog Timers
  • Universal Synchronous/Asynchronous Receiver/Transmitter (UART/SPI/SmartCard(ISO 7816)/IrDA/I2S)
  • I2C interface with SMBus support
  • Up to 20 General Purpose I/O pins
    • Output state retention and asynchronous interrupts

Powerful MCU & Memory Options

  • ARM® Cortex®-M33
    • Floating-Point Unit
  • Up to 80 MHz Clock Speed
  • Low Active Mode Current: 50.9 µA/MHz
  • Up to 1024 kB of Programmable Flash
  • Up to 96 kB SRAM

Package Options

  • QFN32 (4 mm x 4 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 EFR32BG21 family have access to the highest level of IoT security provided by Secure Vault.

Find the Right EFR32BG21 Device Select Columns
Select Columns
Part Number MCU Core Core Frequency (MHz) Flash RAM Bluetooth 5.1 Bluetooth 5 Bluetooth Mesh Secure Vault Cryptography Output Power Range (dBm) Receive Sensitivity GPIO RX Current (mA) UART USART I²C SPI I²S ADC Comparators Timers (16-bit) Temperature Range ºC Package Type Package Size (mm)
ARM Cortex-M33 80 1024 96 Yes AES-128 AES-256 ECC SHA-1 SHA-2 -20 10.5 -97 (1 Mbit/s GFSK) 20 8.7 0 3 2 0 3 12-bit, SAR, 1 Msps 2 2 -40 125 QFN32 4x4
ARM Cortex-M33 80 512 64 Yes AES-128 AES-256 ECC SHA-1 SHA-2 -20 10.5 -97 (1 Mbit/s GFSK) 17 8.7 0 3 2 0 3 12-bit, SAR, 1 Msps 2 2 -40 125 QFN32 4x4
ARM Cortex-M33 80 768 64 Yes AES-128 AES-256 ECC SHA-1 SHA-2 -20 10.5 -97 (1 Mbit/s GFSK) 20 8.7 0 3 2 0 3 12-bit, SAR, 1 Msps 2 2 -40 125 QFN32 4x4
ARM Cortex-M33 80 512 64 Yes AES-128 AES-256 ECC SHA-1 SHA-2 -20 20 -97 (1 Mbit/s GFSK) 20 8.7 0 3 2 0 3 12-bit, SAR, 1 Msps 2 2 -40 125 QFN32 4x4
ARM Cortex-M33 80 768 64 Yes AES-128 AES-256 ECC SHA-1 SHA-2 -20 20 -97 (1 Mbit/s GFSK) 20 8.7 0 3 2 0 3 12-bit, SAR, 1 Msps 2 2 -40 125 QFN32 4x4
ARM Cortex-M33 80 1024 96 AES-256 ECC SHA-1 SHA-2 -20 20 -97 (1 Mbit/s GFSK) 20 8.7 3 3 2 3 2 12-bit, SAR, 1 Msps 2 7 -40 125 QFN32 4x4
ARM Cortex-M33 80 768 64 AES-256 ECC SHA-1 SHA-2 -20 10 -97 (1 Mbit/s GFSK) 20 8.7 3 3 2 3 3 12-bit, SAR, 1 Msps 2 7 -40 125 QFN32 4x4
ARM Cortex-M33 80 1024 96 AES-256 ECC SHA-1 SHA-2 -20 10 -97 (1 Mbit/s GFSK) 20 8.7 3 3 2 3 3 12-bit, SAR, 1 Msps 2 7 -40 125 QFN32 4x4
ARM Cortex-M33 80 512 64 AES-256 ECC SHA-1 SHA-2 -20 20 -97 (1 Mbit/s GFSK) 20 8.7 3 3 2 3 3 12-bit, SAR, 1 Msps 2 7 -40 125 QFN32 4x4
ARM Cortex-M33 80 512 64 AES-256 ECC SHA-1 SHA-2 -20 10 -97 (1 Mbit/s GFSK) 20 8.7 3 3 2 3 3 12-bit, SAR, 1 Msps 2 7 -40 125 QFN32 4x4
ARM Cortex-M33 80 768 64 AES-256 ECC SHA-1 SHA-2 -20 20 -97 (1 Mbit/s GFSK) 20 8.7 3 3 2 3 3 12-bit, SAR, 1 Msps 2 7 -40 125 QFN32 4x4

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