Silicon Labs EFM32 Giant Gecko 12 microcontrollers

The EFM32 Giant Gecko 12 microcontrollers, from Silicon Labs, are designed to provide advanced features and security during ultralow-power performance. The microcontrollers offer low-energy peripherals to deliver autonomous performance while sleeping and are suitable for a broad range of applications requiring advanced processing during deep sleep, including Internet of Things (IoT) devices, sensors, smart meters, industrial automation, home security, and health and fitness wearables.

The microcontrollers offer many of the features of the Giant Gecko 11 family in a smaller package, adding a pulse density modulation (PDM) sensor interface to support PDM microphones and delta-sigma sensors. They feature a 32-bit Arm Cortex-M4 processor running at 72 MHz with up to 1 MB of on-chip flash and 192 KB of RAM. Combining this power with rich analog features, the devices deliver an advanced user experience previously attainable only on high-power-consumption microcontrollers.

Low-energy peripherals include two 12-bit analog-to-digital converters (ADCs), a digital-to-analog converter (DAC), capacitive touch and up to 83 general-purpose inputs/outputs (GPIO). The low-energy sensor interface enables fully autonomous processing capabilities during sleep mode. The microcontrollers include robust security features, including a cryptographic hardware engine that supports AES, ECC, SHA and True Random Number Generator (TRNG).