* 32-bit ARM® Cortex®-M33 core with 80 MHz maximum operating frequency
* Up to 1024 kB of flash and 96 kB of RAM
* 12-channel Peripheral Reflex System enablin.

EFR32BG21B applications include:
* Lighting
* Connected Home
* Gateways and Digital Assistants
* Buildi.

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