EFM32 USB-enabled Happy Gecko

Silicon Labs' EFM32™ Happy Gecko ARM® Cortex®-M0+ based 32-bit microcontrollers (MCUs) provide flash memory configurations up to 64 kB, 4-8 kB of RAM and CPU speeds up to 24 MHz, built on top of a low-power platform that includes innovative low energy techniques, fast wake-up times and energy saving modes.


Silicon Labs' low energy SLSTK3400A is an excellent starting point to get familiar with the EFM32™ USB-enabled Happy Gecko 32-bit microcontrollers. The starter kit contains sensors and peripherals demonstrating some of the MCU's many capabilities and can serve as a starting point for application development. The Happy Gecko demonstrates AEM (Advanced Energy Monitoring) and the Energy Profiler capabilities. This kit has two AEM-channels, one for measuring the current consumption in self-powered mode, and one for monitoring the VBUS-current when the chip is USB-powered.


Happy Gecko Platform Features

  • Starter kit features
    • 20 pin expansion header
    • Breakout pads for easy access to I/O pins
    • Power sources (USB and CR2032 battery)
    • USB interface for Host/Device/OTG

Getting started with ARM mbed and EFM32

Additional Resources

Low-power USB EFM32 Happy Gecko Kit

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