C8051F831-GS

Overview

The C8051F831-GS is an 8-bit mixed-signal ISP Flash MCU from the C8051F80x-83x family by Silicon Labs. It features a high-speed pipelined 8051 core operating at up to 25 MHz, providing 25 MIPS throughput. The device includes 16 kB of in-system programmable Flash memory and 512 bytes of internal data RAM. Key peripherals include a 10-bit ADC with up to 500 ksps sampling rate, a capacitance-to-digital converter for sensing applications, and hardware-enhanced serial interfaces such as UART, SMBus, and SPI.

Feature Summary

• Integrated capacitance-to-digital converter supporting buttons, sliders, wheels, and proximity sensing with fast conversion times and auto-scan capabilities.
• On-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without external emulators.
• Hardware-enhanced communication ports including UART, SMBus (I2C compatible), and SPI for reliable data transfer.
• Programmable Counter Array (PCA) with capture/compare modules and enhanced PWM functionality.

Applications

• Capacitive touch sensing interfaces
• Data acquisition systems
• Industrial control logic
• Embedded communication nodes

Procurement Notes

Verify component authenticity through authorized Silicon Labs distributors or certified partners. Confirm the specific suffix matches project requirements. Note that this product line is marked Not Recommended for New Designs; review current portfolio alternatives for long-term supply assurance before finalizing procurement plans.

Selection Notes

Select this model when 16 kB Flash capacity and 512 bytes RAM are sufficient for application code and data storage. Ensure the design utilizes the SOIC-16 package if space constraints align with its dimensions. Verify that the 10-bit ADC resolution meets signal processing needs, as higher precision models exist within the broader family.

Part Context

This component belongs to the C8051F80x-83x series of fully integrated mixed-signal system-on-chip microcontrollers. The series combines a CIP-51 microcontroller core with extensive analog and digital peripherals on a single die, designed for cost-sensitive embedded applications requiring high integration levels.

Replacement Considerations

Public documentation explicitly marks the C8051F80x-83x family as Not Recommended for New Designs. No direct public substitute part numbers are listed in the provided datasheet. Engineers should consult Silicon Labs for current recommended replacements within newer MCU families.