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EFR32MG21A020F512IM32-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：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 EFR32MG21A020F512IM32-B is a Mighty Gecko RF System on Chip featuring an ARM Cortex-M33 core operating at up to 40 MHz. It integrates 512 kB of flash memory and 64 kB of RAM within a QFN-32 package. The device supports Bluetooth 5.1, Thread, and Zigbee protocols at 2.4 GHz with a maximum data rate of 2 Mbps. It delivers 20 dBm output power and -94.4 dBm sensitivity. Operating voltage ranges from 1.71 V to 3.8 V, with active receive current at 8.8 mA and transmit current at 33.8 mA. The industrial temperature range spans from -40°C to +125°C.
Feature Summary
- Supports multiprotocol mesh networking including Bluetooth 5.1, Thread, and Zigbee for versatile IoT connectivity.
- Integrates Secure Vault technology with physically unclonable function hardware to enhance IoT security.
- Includes rich analog and digital peripherals such as a 12-bit ADC, DMA controller, and multiple communication interfaces.
Applications
- Line-powered Zigbee, Thread, and Bluetooth mesh applications
- Connected lighting systems
- IoT gateways
- Voice assistants
- Smart metering devices
Procurement Notes
Verify the specific suffix 'BR' indicates reel packaging when ordering. Confirm that the 512 kB flash and 64 kB RAM configuration matches the design requirements, distinguishing it from higher-capacity variants like the F1024 series. Ensure compatibility with Simplicity Studio 5 development tools for software migration and integration.
Selection Notes
Select this component for applications requiring high processing capability combined with low active current consumption. The integrated security subsystem addresses risks of intellectual property compromise. Consider the 20 GPIO count and available peripheral interfaces for system expansion needs.
Part Context
This part belongs to the EFR32MG21 Series 2 family of wireless SoCs designed for line-powered IoT applications. It offers optimized performance for 2.4 GHz communications, balancing robust RF links with efficient power management compared to previous generations.
Replacement Considerations
Public confirmed substitute part numbers are not provided in the source documentation. Verify cross-compatibility with other EFR32MG21 variants based on specific memory and package requirements.
