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EFR32MG21A020F768IM32-B The Silicon Labs EFR32MG21A020F768IM32-B is a multiprotocol wireless SoC featuring an 80 MHz ARM Cortex-M33 core. It offers 768kB of flash memory and 64kB of RAM.
Mfr Part #:

EFR32MG21A020F768IM32-B

Available from 1 distributors
Mfr Name: Silicon Labs
Silicon Labs
The Silicon Labs EFR32MG21A020F768IM32-B is a multiprotocol wireless SoC featuring an 80 MHz ARM Cortex-M33 core. It offers 768kB of flash memory and 64kB of RAM.
Total Stock: 8,820 pcs
$ Price Range: $710.26

EFR32MG21A020F768IM32-B Available from 1 distributor

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EFR32MG21A020F768IM32-B Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Core Processor
Current
Data Rate (Max)
Flash Memory
Frequency
GPIO
Lead Spacing
Memory Size
Modulation
Mounting Type
Operating Frequency
Operating Temperature
Power
Protocol
RAM Memory
RF Family
RX Current
Sensitivity
Serial Interfaces
Supplier Device Package
TX power
Tape & Reel
Type
Voltage

EFR32MG21A020F768IM32-B Description

Short technical summary and product information.

The EFR32MG21A020F768IM32-B is a multiprotocol wireless System on Chip (SoC) from Silicon Labs, designed for energy-friendly IoT applications. It integrates an 80 MHz ARM Cortex-M33 processor with DSP extensions and a floating-point unit, providing robust processing capabilities.

 

This SoC supports multiple wireless protocols including Bluetooth v5.1, Thread, and Zigbee®, operating at a 2.4 GHz frequency. Key electrical specifications include a transmit power of up to 20 dBm and a receiver sensitivity of -104.9 dBm. It features a wide operating voltage range of 1.71V to 3.8V and consumes 8.8mA of current during RX.

 

The device offers 768kB of flash program memory and 64kB of RAM, along with 20 GPIO pins for flexible interfacing. It supports various serial interfaces such as ADC, GPIO, I²C, I²S, SPI, and UART. The operating temperature range is -40°C to 125°C.

 

Packaged in a 32-QFN (4x4) format, the EFR32MG21A020F768IM32-B is designed for surface mount applications. It is built with a focus on security, featuring an integrated Hardware Secure Engine for secure boot and other security functions.

EFR32MG21A020F768IM32-B Quick Information

Product Type: RF Transceiver IC
Canonical Name: EFR32MG21A020F768IM32-B Multiprotocol Wireless SoC
Subcategory: Multiprotocol Wireless SoC

EFR32MG21A020F768IM32-B Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

EFR32MG21A020F768IM32-B Estimated Pricing

Qty Low High
1+ $710.26 $710.26

Estimated market price range - modelled values for guidance only, not live distributor offers.

EFR32MG21A020F768IM32-B Features

  • Multiprotocol wireless SoC with ARM Cortex-M33.
  • Supports Bluetooth, Thread, and Zigbee protocols.
  • Integrated 2.4 GHz radio with 20 dBm TX power.
  • High receiver sensitivity of -104.9 dBm.
  • 768kB Flash and 64kB RAM memory.

EFR32MG21A020F768IM32-B Applications

  • Ideal for IoT multi-protocol devices.
  • Suitable for connected home applications.
  • Used in gateways and digital assistants.
  • Applicable to building automation systems.
  • Enables energy-efficient wireless networking.

EFR32MG21A020F768IM32-B FAQs

6 frequently asked questions generated from this part’s specifications.
What is the operating voltage range for the EFR32MG21A020F768IM32-B?

The operating voltage range is 1.71V to 3.8V.

What is the operating temperature range for this SoC?

The operating temperature range is -40°C to 125°C.

What wireless protocols does the EFR32MG21A020F768IM32-B support?

It supports Bluetooth v5.1, Thread, and Zigbee® protocols.

What is the maximum transmit power?

The maximum transmit power is 20 dBm.

What is the receiver sensitivity?

The receiver sensitivity is -104.9 dBm.

How much flash and RAM memory does this device have?

It has 768kB of flash program memory and 64kB of RAM data memory.

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