Silicon Labs EFR32BG22 BLUETOOTH® 5.2 Wireless SoCs

Silicon Labs EFR32BG22 BLUETOOTH® 5.2 Wireless SoCs (System-on-Chip) are versatile, single-chip solutions for Bluetooth Low Energy (BLE), Bluetooth Mesh, and direction-finding with sub-meter accuracy. The EFR32BG22 SoCs combine best-in-class, ultra-low transmit and receive power (3.6mA Tx at 0dBm, 2.6mA Rx) and a high-performance, low-power Arm® Cortex®-M33 core (27µA/MHz active, 1.2µA sleep). These devices deliver industry-leading energy efficiency extending coin cell battery life for up to ten years.

The EFR32BG22 portfolio offers a choice of three devices designed to address a wide range of price/performance requirements for smart home, consumer, commercial, and industrial IoT applications, including those requiring multi-year battery life.

The EFR32BG22C112 SoC targets high-volume, cost-sensitive applications, providing access to 1Mbps and 2Mbps Bluetooth PHYs, along with a 38.4MHz Arm Cortex-M33 core, 18 GPIOs and 352kB of flash memory with radio characteristics of 0dBm transmit (Tx) and an industry-leading -99dBm receive (Rx) (1M PHY) sensitivity.
The EFR32BG22C222 SoC targets applications requiring more computing power, with a 76.8MHz M33 core, more I/Os (26 GPIOs), and a higher Tx power (+6dBm).
The EFR32BG22C224 SoC provides IQ sampling for direction-finding applications and access to 125kB and 500kB Bluetooth LE Coded PHYs, which can increase Rx sensitivity to -106dBm. This SoC also offers a wide -40°C to +125°C operating temperature range and extends flash memory up to 512kB to support applications requiring direction-finding capabilities or low-power mesh nodes.

Features

Low power wireless System-on-Chip
- High Performance 32-bit 76.8MHz Arm® Cortex-M33 with DSP instruction and floating-point unit for efficient signal processing
- Up to 512kB flash program memory
- Up to 32kB RAM data memory
Radio performance
- -98.9dBm sensitivity at 1Mbit/s GFSK
- -96.2dBm sensitivity at 2Mbit/s GFSK
- -106.7dBm sensitivity at 125kbps GFSK
- TX power up to 6dBm
- 2.6mA radio receive current
- 3.5mA radio transmit current @ 0dBm output power
- 7.8mA radio transmit current @ 6dBm output power
Low system energy consumption
- 3.6mA RX current (1Mbps GFSK)
- 4.1mA TX current at 0dBm output power
- 8.2mA TX current at 6dBm output power
- 27μA/MHz in Active Mode (EM0) at 76.8MHz
- 26μA/MHz in Active Mode (EM0) at 38.4MHz
- 1.40μA EM2 DeepSleep current (32kB RAM retention and RTC running from LFXO)
- 1.75μA EM2 DeepSleep current (32kB RAM retention and RTC running from Precision LFRCO)
- 1.05μA EM3 DeepSleep current (8kB RAM retention and RTC running from ULFRCO)
Supported modulation format
- 2 (G)FSK with fully configurable shaping
- OQPSK DSSS
- (G)MSK
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

Protocol support
- Bluetooth Low Energy (Bluetooth 2)
- Direction finding using Angle-of-Arrival (AoA) and Angle-of-Departure (AoD)
- Proprietary
Wide selection of MCU peripherals
- 12-bit 1Msps SAR 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)
- 4x 16-bit timer/counter with 3 compare/capture/PWM channels
- 1x 32-bit timer/counter with 3 compare/capture/PWM channels
- 32-bit real-time counter
- 24-bit low energy timer for waveform generation
- 1x watchdog timer
- 2x Universal Synchronous/Asynchronous Receiver/Transmitter (UART/SPI/SmartCard (ISO 7816)/IrDA/I2S)
- 1x Enhanced Universal Asynchronous Receiver/Transmitter (EUART)
- 2x I²C interface with SMBus support
- Digital microphone interface (PDM)
- Precision low-frequency RC oscillator enabling single-crystal operation
- RFSENSE with selective OOK mode
- Die temperature sensor with ±2°C accuracy across the temperature range
Wide operating range
- 71V to 3.8V single power supply
- -40°C to +125°C
Package options
- QFN40 5mm x 5mm x 0.85mm
- QFN32 4mm x 4mm x 0.85mm
- TQFN32 4mm x 4mm x 0.30mm