 In Shutoff mode, with 20–100 nA current consumption, depending on product, applications have access to GPIO, reset, a real-time counter (RTC) and retention memory.The EFM32 family consists of a number of sub-families, ranging from the EFM32 Zero Gecko, based on an ARM Cortex-M0+, to the higher performing EFM32 Giant Gecko and Wonder Gecko, based on Cortex-M3 and Cortex-M4 respectively.EFM32 technology is also the foundation for EFR32 Wireless Geckos, a portfolio of Sub-GHz and 2.4 GHz wireless system on a chip (SoC) devices.