Energy Modes

Ultra efficient Energy Modes

With a high performance 32-bit Cortex-M3 processor, high code density and autonomous peripherals, the EFM32 microcontroller executes application code faster than 8-, 16-, and even 32-bit solutions. Because of this the EFM32 can spend most of its time in some of the ultra efficient energy saving modes that it features. Several ultra low Energy Modes are available for tuning the energy budget and significantly reducing the power consumption.

The EFM32 is designed to achieve a high degree of autonomous operation in the low energy modes. An intelligent combination of peripherals, low leakage RAM with data retention, DMA and interconnection ability, low-power oscillators, and very short wake-up times makes it very attractive to remain in the low energy modes for long periods and thus reducing the energy consumption.

Click on an Energy Mode for more information

• Energy Mode 0 (EM0): Active Mode with Cortex-M3 system active and all peripherals software selectable
• Energy Mode 1 (EM1): High speed autonomous operation with Cortex-M3 disabled. All peripherals software selectable
• Energy Mode 2 (EM2): Low speed autonomous operation with 32 kHz oscillator and low energy peripherals active
• Energy Mode 3 (EM3): Low speed autonomous operation with selected peripherals active and full RAM retention
• Energy Mode 4 (EM4): Standby mode

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