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EFR32MG21A010F512IM32-B
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Product Detailed Parameters
- Description：IC RF TXRX+MCU BLE 32QFN
- Series：Mighty Gecko
- Mfr：Silicon Labs
- Package：Tray
- Type：TxRx + MCU
- RF Family/Standard：Bluetooth
- Protocol：Bluetooth v5.1, Thread, Zigbee®
- Modulation：GFSK, O-QPSK
- Frequency：2.4GHz
- Data Rate (Max)：2Mbps
- Power - Output：10dBm
- Sensitivity：-104.9dBm
- Memory Size：512kB Flash, 64kB RAM
- Serial Interfaces：ADC, GPIO, I2C, I2S, SPI, UART
- Voltage - Supply：1.71V ~ 3.8V
- Current - Receiving：8.8mA
- Current - Transmitting：33.8mA
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：32-VFQFN Exposed Pad
- Supplier Device Package：32-QFN (4x4)
- GPIO：20
- Grade：-
- Qualification：-
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Overview
The Silicon Labs EFR32MG21A010F512IM32-B is a Mighty Gecko System on Chip featuring an ARM Cortex-M4 core operating at up to 40 MHz. It integrates a 2.4 GHz radio with 10 dBm output power and supports Bluetooth 5.1, Thread, and Zigbee protocols. The device includes 512 kB of flash memory and 64 kB of RAM within a QFN-32 package. It operates between 1.8 V and 3.8 V across a temperature range of -40°C to +125°C.
Feature Summary
- Integrates a high-performance 2.4 GHz radio with mesh multiprotocol support for Bluetooth, Thread, and Zigbee.
- Combines an ARM Cortex-M4 microcontroller with substantial onboard flash and RAM storage.
- Provides versatile peripheral interfaces including I2C, SPI, UART, and I2S for system connectivity.
Applications
- Smart home lighting and control systems
- Wireless sensor networks and IoT devices
- Home automation hubs and gateways
Procurement Notes
Verify the specific suffix 'B' against the manufacturer's official documentation to confirm the exact pinout and package dimensions. Ensure that the required firmware libraries align with the integrated Cortex-M4 architecture and supported wireless standards before finalizing component selection.
Selection Notes
Select this model when a compact solution combining a 40 MHz processor with a 2.4 GHz transceiver is required. It is suitable for applications needing simultaneous support for multiple wireless protocols without external radios. Consider the 512 kB flash capacity relative to application code size requirements.
Part Context
This component belongs to the Mighty Gecko family of wireless SoCs from Silicon Labs. These chips are designed for low-power wireless applications requiring robust connectivity. The MG21 series specifically targets smart energy and home automation markets with optimized RF performance.
Replacement Considerations
The EFR32MG21A010F512IM32-BR is a reel-packaged variant of the same silicon. Other Mighty Gecko models may offer different flash sizes or radio power levels but require software adaptation.
