EFM32 Leopard Gecko

Silicon Labs' EFM32™ Leopard Gecko ARM® Cortex®-M3 based 32-bit microcontrollers (MCUs) provide flash memory configurations up to 256 kB, 32 kB of RAM and CPU speeds up to 48 MHz. The Leopard Gecko family features innovative low energy techniques, short wake-up time from energy saving modes and a wide selection of peripherals, making it ideal for battery operated applications and other systems requiring high performance and low-energy consumption.


Silicon Labs' EFM32LG-STK3600 is an excellent starting point to get familiar with the EFM32™ Leopard 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 Leopard Gecko features an on-board SEGGER J-Link debugger and an Advanced Energy Monitoring system, allowing you to program, debug and perform real-time current profiling of your application without using external tools.


Leopard Gecko Platform Features

  • EFM32LG990F256 MCU
    • ARM® Cortex™-M3, up to 48MHz
    • 32kB RAM
    • 256kB Flash
    • EFM32 OPAMP footprint
  • 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
  • On-board peripherals
    • 32 MB NAND Flash
    • 2 user buttons, 2 user LEDs
    • 160 Segment LCD
    • Touch slider
    • Ambient light sensor
    • Inductive-capacitive metal sensor
    • Backup capacitor for RTC mode

Getting started with ARM mbed and EFM32

Additional Resources

EFM32 Giant Gecko and Leopard Gecko Starter Kits for Cortex-M3 applications

More information

Learn more about Silicon Labs' EFM32 Leopard Gecko Starter Kit

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