EFR32xG21 Wireless Gecko Reference Manual

2024-02-24
●The EFR32xG21 Wireless Gecko SoC is the first device in the Series 2 Wireless Gecko Portfolio, and includes the EFR32MG21 Mighty Gecko and EFR32BG21 Blue Gecko. The EFR32xG21 improves processing capability with a Cortex M33 core and has best in class link budget while providing for lower active current for both the MCU and radio. The dedicated security core (Secure Engine) provides improved cryptography and hardware security that is isolated from the main application CPU. This high performance and secure multi-protocol device supports Zigbee, Thread, and Bluetooth 5.0.
●The single-die solution provides industry-leading energy efficiency, processing capability, and RF performance in a small form factor for IoT connected applications.
■KEY FEATURES
●32-bit ARM® Cortex M33 core with 80 MHz maximum operating frequency
●Scalable Memory and Radio configuration options available in QFN packaging
●Peripheral Reflex System enabling autonomous interaction of MCU peripherals
●Autonomous Hardware Crypto Accelerator and True Random Number Generator
●Multiple Integrated 2.4 GHz PAs with up to 20 dBm transmit power

Silicon Labs

EFR32xG21EFR32MG21EFR32BG21

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Wireless Gecko SoC

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IoT connected applications ]

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User's Guide

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QFN

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January, 2024

Revision 1.0

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