EFR32FG Flex Gecko MCUs Silicon Labs EFR32FG Flex Gecko SoCs combine an energy-friendly ARM Cortex M4 MCU with a highly-integrated radio transceiver to support proprietary wireless protocols. EFR32FG's single-die solution offers industry-leading energy efficiency, ultra-fast wakeup times, a scalable power amplifier, an integrated 2.4GHz balun, and impressive MCU features. The EFR32FG Flex Gecko SoCs are ideally suited for energy-friendly proprietary protocol networking for IoT devices. Flex Gecko applications include commercial & retail, home & building automation and security, metering, electronic shelf labels, and industrial automation.Learn More