The MSP430FR6972IPMR with 16-bit Microcontrollers by Texas Instruments is an ultra-low power MCU that features a 16MHz frequency. It includes 64KB of FRAM (Ferroelectric RAM), 2KB SRAM, and a 12-bit analog to digital converter. It also includes 51 IO pins and an AES 64-LQFP for connecting components to the processor. The chip has a maximum rated temperature range of -40 to 85 Celsius and is distributed in a 0.4mm pitch QFP package. This chip is perfect for ultra-low power applications and designs that require low voltage operation.