EFM32™ Gecko 32-bit Microcontroller

Our EFM32™ Gecko family is ideal for battery-operated applications and other systems requiring high performance and low-energy consumption. The 32-bit low-power microcontroller (MCU) family features short wake-up time from energy-saving modes and a wide selection of peripherals. Based on the powerful ARM® Cortex®-M3 core, the Gecko MCU family includes 25 devices that offer flash memory configurations up to 128 kB, 8–16 kB of RAM and CPU speeds up to 32 MHz.

Efm32g BD
Sleep current with RTC as low as
0.9 μA
Active current as low as
180 μA/MHz

Gecko Common Specs

  • ARM Cortex-M3 CPU platform
  • 32 MHz
  • Up to 128 Flash
  • Up to 16 kB RAM
  • 180 μA/MHz in Active Mode (EM0)
  • 0.9 μA sleep with RTC and RAM retention
  • Autonomous peripherals in sleep
  • DMA and peripheral reflex system
  • LESENSE
  • USART, I2C, and SPI
  • Up to 90 General Purpose I/O Pins
  • -40 °C to +85 °C temperature grade
  • 1.98 V to 3.8 V single power supply
  • Packages:
    • 32-pin QFN (6 mm x 6 mm)
    • 48-pin QFP (7 mm x 7 mm)
    • 64-pin QFN (9 mm x 9 mm)
    • 64-pin QFP (10 mm x 10 mm)
    • 100-pin QFP (14 mm x 14 mm)
    • 112-pin BGA (10 mm x 10 mm)

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