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Silicon Labs

Silicon Labs QuickSense™ MCUs » C8051F811

Order Number Distributor Stock    
C8051F811-GS Mouser Electronics 7 BUY NOW QUOTE
Avnet Electronics Marketing 0 ORDER QUOTE
C8051F811-GSR Avnet Electronics Marketing 0 ORDER QUOTE

The QuickSense™ C8051F8xx family of capacitive sensing MCUs provides an easy and reliable solution for capacitive buttons, sliders, wheels and capacitive proximity sensing. The C8051F800 family builds upon the C8051F700 MCU family by adding a lower-pin count, small form factor option to the industry’s fastest capacitive touch sense solutions. The C8051F800 adds 16-, 20- and 24-pin package options to the existing 48- and 64-pin C8051F700, providing more options to fit products with the optimal pin count, size and cost.  Additional resources such as a 10-bit ADC and digital PWM provide additional human interface support for accelerometers, vibratory haptic feedback, LED illumination control, temperature sensing and resistive touch screen sensing.

With on-chip power-on reset, VDD monitor, watchdog timer and clock oscillator, the C8051F8xx devices are truly stand-alone, system-on-a-chip solutions. The Flash memory can be reprogrammed even in-circuit, providing non-volatile data storage, and also allowing field upgrades of the 8051 firmware. User software has complete control of all peripherals, and may individually shut down any or all peripherals for power savings.


  • High-speed pipelined 8051-compatible microcontroller core (up to 25 MIPS)
  • In-system, full-speed, non-intrusive on-chip debug interface
  • 10-bit 500 ksps single-ended ADC
  • Precision calibrated 24.5 MHz internal oscillator
  • 16 kB of on-chip Flash memory
  • 512 bytes of on-chip RAM
  • Implemented SMBus/I2C, UART and SPI serial interfaces
  • Three general-purpose 16-bit timers
  • 16-input capacitance to digital converter
  • Programmable Counter/Timer Array (PCA)
  • On-chip internal voltage reference
  • On-chip watchdog timer
  • On-chip power-on reset and supply monitor
  • On-chip voltage comparator
  • 17 general purpose I/O

Data Sheet