C8051F801-GUR

Overview

The C8051F801-GUR is an 8-bit mixed-signal microcontroller from the Silicon Labs C8051F80x-83x family, featuring a high-speed CIP-51 core operating at up to 25 MHz. It integrates 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 throughput, a capacitance-to-digital converter supporting capacitive sensing, and a comparator. Digital interfaces consist of hardware-enhanced UART, SMBus, and SPI ports. The device operates on a supply voltage range of 1.8 V to 3.6 V and is available in 24-pin QSOP, 20-pin QFN, and 16-pin SOIC packages.

Feature Summary

• Integrates a capacitance-to-digital converter for buttons, sliders, wheels, and proximity sensing with auto-scan capabilities.
• Features a pipelined CIP-51 core that executes most instructions in one or two system clocks for efficient processing.
• Includes on-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without external emulators.
• Provides flexible clock sources including an internal oscillator and external options, allowing on-the-fly switching.

Applications

• Capacitive touch interface designs requiring button, slider, or wheel detection.
• Battery-powered systems utilizing low-voltage operation and power management modes.
• Industrial control applications needing mixed-signal monitoring via ADC and comparators.
• Embedded devices requiring robust serial communication through UART, SMBus, and SPI.

Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheet specifications. Confirm package type matches design requirements as the series supports multiple form factors. Review end-of-life status documentation prior to integration, as this family may be discontinued. Ensure supply chain partners provide valid traceability records. Validate electrical characteristics against application environmental conditions before finalizing procurement decisions.

Selection Notes

Select this model when 16 kB of Flash and 512 bytes of RAM are sufficient for application logic. Choose based on required peripheral count, specifically the presence of the capacitance-to-digital converter and 10-bit ADC. Consider package constraints such as pin count and thermal performance when deciding between QSOP, QFN, or SOIC variants. Verify voltage supply compatibility within the 1.8 V to 3.6 V range. Evaluate clock source needs to determine if internal oscillator precision meets timing requirements.

Part Context

This component belongs to the C8051F80x-83x mixed-signal ISP Flash MCU family from Silicon Labs. The family shares a common architecture centered around the CIP-51 core and integrated analog peripherals. Variants within the series differ primarily in memory sizes, I/O counts, and specific peripheral configurations. This specific part number denotes a configuration optimized for general-purpose mixed-signal control tasks.

Replacement Considerations

Consult the official product selection guide for direct functional equivalents within the same family. Verify pinout compatibility if substituting with other package types like QFN or SOIC. Check for updated revision levels that may affect electrical characteristics or software compatibility. Ensure any substitute maintains the required capacitance sensing and ADC performance metrics.