company blog about [RF System-on-Chip] Silicon Labs EFR32BG22C222F352GM40-C: 352KB Flash/QFN40 Bluetooth 5.2 SoC

Silicon Labs' EFR32BG22 series is a new generation of BT® 5.2/5.3 wireless system-on-chip (SoC) designed for ultra-low-power, miniaturized IoT devices. As an evolution of the “Blue Gecko” family, it significantly enhances RF performance and security while maintaining extreme energy efficiency, making it an ideal choice for battery-powered IoT devices.

Shenzhen Mingjiada Electronics Co., Ltd. now offers the core model EFR32BG22C222F352GM40-C in brand-new, original packaging with stable supply and guaranteed quality, empowering customers to rapidly capture the low-power BT market.

EFR32BG22C222F352GM40-C Overview

The EFR32BG22C222F352GM40-C is a BT wireless SoC chip from Silicon Labs' Blue Gecko series, specifically designed for low-power BTIoT applications. This chip integrates a high-performance 32-bit ARM Cortex-M33 core with a 2.4GHz RF transceiver on a single die. Supporting BT 5.2, it delivers industry-leading energy efficiency, robust security features, and extensive peripheral interfaces, making it ideal for compact, battery-powered IoT devices.

Core Model Breakdown: EFR32BG22C222F352GM40-C

Detailed parameter interpretation for precise engineering selection:

EFR32BG22: Blue Gecko series, specialized for BT Low Energy (BLE) applications.

C222: Indicates specific performance configuration tier, typically denoting the high RF performance variant supporting +10 dBm output power.

F352: Features 352 KB of Flash memory and 64 KB of RAM. Compared to previous generations, the increased memory capacity enables running more complex protocol stacks (e.g., BT Mesh, AoA/AoD positioning) and application code.

G: Industrial-grade temperature range of -40°C to +85°C, suitable for harsh environments.

M40: Uses a QFN40 (5x5mm) package. Smaller than QFN48, saving PCB space while retaining sufficient I/O pins.

-C: Revision C version, representing the latest silicon revision with optimized power consumption curves and RF stability. This is the current primary shipping version.

Basic Information

Model: EFR32BG22C222F352GM40-C

Series: Silicon Labs EFR32BG22 Blue Gecko BT 5.2 Wireless SoC

Type: RF System-on-Chip (SoC) = Integrated RF Transceiver + MCU

Core Parameters

Core Architecture: 32-bit ARM Cortex-M33 (with DSP instruction set and floating-point unit FPU)

Core Frequency: 76.8 MHz

Flash Memory Capacity: 352 KB

RAM Capacity: 32 KB

RF Frequency: 2.4 GHz

BT Version: BT 5.2 / BT Low Energy (BLE)

Maximum Transmit Power: +6 dBm

Receive Sensitivity: -98.9 dBm (1 Mbit/s GFSK)

Operating Voltage: 1.71 V - 3.8 V

Operating Temperature: -40°C to +85°C (Commercial Grade)

Package Type: QFN-40 (5mm×5mm×0.85mm)

GPIO Count: 26 General-Purpose I/O Pins

Primary Application Areas

Wearables: Smart bands, smartwatches, health monitoring devices

Medical IoT: Blood glucose meters, thermometers, portable medical terminals

Smart Home: Smart door locks, sensor nodes, BT beacons

Asset Tracking: Item trackers, personnel location tags

Human-Machine Interface Devices: Keyboards, mice, remote controls, game controllers

Industrial IoT: Wireless sensors, data acquisition terminals

Consumer Electronics: BT audio devices, smart accessories