The microcontrollers feature low-energy peripherals that can work autonomously while the core sleeps. The EFM32 Giant Gecko 12 family offers many of the features of the Giant Gecko 11 MCUs in a smaller package, and adds a pulse density modulation (PDM) sensor interface to support PDM microphones and delta-sigma sensors. The MCUs are powered by a 32-bit Arm Cortex-M4 processor running at 72 MHz with up to 1 Mbyte Flash and 192 Kbytes RAM.
Low-energy peripherals include two 12-bit ADCs, a DAC, capacitive touch, and up to 83 GPIOs. The series includes robust security features, including a unique cryptographic hardware engine that supports AES, ECC, SHA, and True Random Number Generator (TRNG).
The EFM32 Giant Gecko 12 family is supported by the Thunderboard GG12 kit for prototyping and evaluation. The Thunderboard GG12 kit includes an integrated Segger J-Link debugger, two PDM microphones, tri-colour LEDs, and breakout ports, and push buttons. The board also includes an out-of-box demo for the microcontroller’s PDM sensor interface.