The EFM32 Leopard Gecko MCUs are the world’s most energy-friendly microcontrollers.

The EFM32LG offers unmatched performance and ultra low power consumption in both active and sleep modes. EFM32LG devices consume as little as 0.65 μA in Stop mode and 211 μA/MHz in Run mode. It also features autonomous peripherals, high overall chip and analog integration, and the performance of the industry standard 32-bit ARM CortexM3 processor, making it perfect for battery-powered systems and systems with high-performance, low-energy requirements.

EFM32LG applications include the following:
• Energy, gas, water and smart metering
• Health and fitness applications
• Smart accessories
• Alarm and security systems
• Industrial and home automation

KEY FEATURES
• ARM Cortex-M3 at 48 MHz
• Ultra low power operation
    • 0.65 μA current in Stop (EM3), with brown-out detection and RAM retention
    • 63 μA/MHz in EM1
    • 211 μA/MHz in Run mode (EM0)
• Fast wake-up time of 2 µs
• Hardware cryptography (AES)
• Up to 256 kB of Flash and 32 kB of RAM