Silicon Labs EFR32BG22C224F512IM32-C, 32bit Wireless Microcontroller, EFR32BG22 Wireless Gecko SoC, 76.8MHz, 512 kB

The Silicon Labs EFR32BG22 series wireless Gecko SoC family is ideal for enabling energy-friendly Bluetooth 5.2 networking for IoT devices. The single-die solution combines a 76.8MHz cortex-M33, with a high performance 2.4GHz radio to provide an industry-leading wireless SoC for IoT connected applications.

Combination of best-in-class ultra-low transmit and receive power (3.6mA TX at 0 dBm, 2.6mA RX) and a high-performance
Low-power Arm® Cortex®-M33 core (27 μA/MHz active, 1.2 μA sleep)
Secure boot with root of trust and secure loader (RTSL)