C8051F812-GUR

Overview

The C8051F812-GUR is an 8-bit microcontroller from the Silicon Labs C8051F80x-83x family, featuring a high-speed 8051 core with up to 25 MIPS throughput at a 25 MHz clock. It integrates 8 kB of Flash memory and 512 bytes of internal data RAM. The device includes a 10-bit ADC supporting up to 500 ksps and a Capacitance to Digital Converter for capacitive sensing applications. It operates within a supply voltage range of 1.8 V to 3.6 V and is available in a QSOP-24 package.

Feature Summary

• Integrated Capacitance to Digital Converter supports buttons, sliders, wheels, and proximity sensing with fast conversion times and auto-scan capabilities.
• On-chip debug circuitry facilitates full-speed, non-intrusive in-system debugging without requiring external emulation hardware.
• High-speed pipelined 8051 core executes a majority of instructions in one or two system clocks for efficient processing.
• Digital peripherals include hardware-enhanced UART, SMBus, SPI, timers, and a Programmable Counter Array with PWM functionality.

Applications

• Capacitive touch interface designs utilizing the integrated QuickSense technology
• Battery-powered embedded systems requiring low-voltage operation and power management modes
• Industrial control applications using analog signal acquisition via the 10-bit ADC
• Communication interfaces leveraging UART, SMBus, and SPI protocols

Procurement Notes

Verify component authenticity through authorized distributors as this part is marked Not Recommended for New Designs. Confirm package integrity and moisture sensitivity handling procedures prior to assembly. Review the latest datasheet revision for any updates to electrical characteristics or ordering information before finalizing procurement plans.

Selection Notes

Select this MCU for applications requiring integrated capacitive sensing alongside standard 8-bit processing. Ensure design compatibility with the 1.8 V to 3.6 V operating range. Consider the QSOP-24 package constraints for PCB layout. Evaluate if the 8 kB Flash and 512 B RAM meet project requirements compared to other members of the C8051F8xx family.

Part Context

This component belongs to the C8051F80x-83x Mixed Signal ISP Flash MCU family by Silicon Labs. The series combines a CIP-51 microcontroller with extensive analog and digital peripherals on a single chip. The family emphasizes ease of development through on-chip debug capabilities and in-system programmability.

Replacement Considerations

Consult the manufacturer's product selection guide for alternative devices within the C8051F8xx series that offer similar pinouts or enhanced features. Verify functional compatibility regarding memory size, peripheral availability, and package dimensions when evaluating substitutes.

FAQ

What is the maximum sampling rate of the ADC?

The 10-bit ADC supports a maximum sampling rate of up to 500 ksps.

Does the device support capacitive sensing without external components?

Yes, the integrated Capacitance to Digital Converter supports buttons, sliders, and proximity sensing directly.