C8051F97X Datasheet – 8 Bit, Microcontroller ( PDF )

Part Number: C8051F97X

Function: Low Power Capacitive Sensing MCU with up to 32 kB of Flash

Package: 24-pin QFN (4×4 mm), 32-pin QFN (5×5 mm), 48-pin QFN (6×6 mm)

Manufacturer: Silicon Laboratories

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C8051F97X datasheet



The 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. The C8051F97x expands the capabilities of the popular C8051F99x low power capacitive sense family with up to 43 capacitive sensing inputs, 32 kB flash, 8 kB RAM, 7 DMA channels and a 16×16 MAC in packages as small as 4 mm x 4 mm.


(1) Low Power Consumption
– 200 µA/MHz in active mode (24.5 MHz clock)
– 2 µs wakeup time
– 55 nA sleep mode with brownout detector
– 280 nA sleep mode with LFO
– 600 nA sleep mode with external crystal

(2) Capacitance Sense Interface
– Supports buttons, sliders, wheels, and proximity sensing
– Fast 40 µs per channel conversion time
– 16-bit resolution, up to 43 input channels
– Auto scan and wake-on-touch
– Auto-accumulate up to 64x samples

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Other data sheets are available within the file:

C8051F970-A-GM, C8051F970–A–GM, C8051F971-A-GM,

C8051F972-A-GM, C8051F973-A-GM


C8051F97X Datasheet PDF Download

C8051F97X pdf