The biggest attraction of the EFM32 is its extremely low power consumption. Various schemes are used to achieve low power consumption.

• Low power consumption during normal operation
• Low power consumption at idle
• Short wakeup time from idle
• Easy-to-use, multiple low-power modes
• Peripheral design focused on power saving performance
• Mechanism in which peripherals work together even when the CPU is in sleep mode (Peripheral ReflexSystem)
• Sensor interface that operates autonomously without CPU intervention
• A powerful development environment (Simplicity Studio) that supports low-power designs

* Values in the table below are taken from the datasheet