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EFR32MG21A020F1024IM32-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：20dBm
- Sensitivity：-104.9dBm
- Memory Size：1024kB Flash, 96kB 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 EFR32MG21A020F1024IM32-B is a Mighty Gecko Series 2 RF transceiver IC with an integrated ARM Cortex-M33 microcontroller. It operates at 2.4 GHz with a maximum output power of +20 dBm and supports Bluetooth v5.1, Thread, and Zigbee protocols. The device features 1024 kB of flash memory and 96 kB of RAM within a 32-VFQFN package. Supply voltage ranges from 1.71 V to 3.8 V, with receive current at 8.8 mA and transmit current at 33.8 mA.
Feature Summary
- Integrated ARM Cortex-M33 processor with DSP and floating-point unit for high-performance computing
- Supports multiprotocol mesh networking including Bluetooth 5.1, Thread, and Zigbee
- Includes Secure Vault technology with physical unclonable function (PUF) hardware security
- Provides rich analog and digital peripherals such as 12-bit ADC, DMA controller, and multiple communication interfaces
Applications
- Line-powered ZigBee and Thread mesh networks
- Bluetooth Low Energy smart home devices
- Smart lighting systems and voice assistants
- IoT gateways and smart meters
Procurement Notes
Verify the specific suffix 'B' against official Silicon Labs documentation to confirm pinout and package dimensions. Ensure compatibility with Simplicity Studio development tools. Check for moisture sensitivity levels and reflow soldering profile requirements before assembly. Confirm availability of required development kits like SLWSTK6006A for initial prototyping.
Selection Notes
Select this model for applications requiring high output power up to +20 dBm and robust security features. The 1024 kB flash and 96 kB RAM support complex firmware for multiprotocol operation. Consider the 32-VFQFN package size for space-constrained designs. Evaluate thermal performance given the operating temperature range of -40°C to 125°C.
Part Context
This component belongs to the EFR32MG21 Mighty Gecko family, designed for energy-efficient IoT connectivity. It integrates wireless radio capabilities with a powerful MCU core. The series emphasizes low active current consumption while maintaining strong RF performance for reliable long-range communication in crowded 2.4 GHz environments.
Replacement Considerations
Check for variants with different memory sizes or output power levels within the EFR32MG21 family. Verify if alternative suffixes indicate changes in packaging or temperature ratings. Consult official substitution guides for pin-compatible upgrades.
