Silicon Labs C8051F97x Low Power Capacitive Sensing Microcontrollers are the industry's most energy-efficient ultra-low-power cap sensing 8-bit MCUs for touch control. C8051F97x MCU family combines Silicon Labs' proven low power technology for the longest battery life of any MCU in its class with the industry's highest performance and lowest power capacitive sensing solution to address the rapidly-growing human interface application market. Silicon Labs C8051F97x MCU family expands the capabilities of the popular C8051F99x low power capacitive sense family with up to 43 capacitive sensing inputs, 32KB flash, 8KB RAM, 7 DMA channels and a 16x16 MAC in packages as small as 4mm x 4mm. C8051F97x offers the industry's leading capacitive sensing with <1µA wake on touch average current and industry leading 100:1 capacitive sensing dynamic range to support buttons, sliders, touch pads, and capacitive proximity sensing. The Simplicity Studio development environment and an unlimited code size Keil compiler are offered for free. An integrated IDE, demos, examples and the Capacitive Sense Profiler are offered with Simplicity Studio to simplify the development of capacitive touch sensing solutions.