C8051F800-GUR

Overview

The C8051F800-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 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 for capacitive touch sensing, and multiple digital interfaces such as UART, SMBus, and SPI. The device supports supply voltages from 1.8 V to 3.6 V and operates within a temperature range of –40 °C to +85 °C.

Feature Summary

• Integrated capacitance-to-digital converter supporting buttons, sliders, wheels, and proximity sensing with auto-scan capabilities.
• High-speed pipelined 8051 core executing 70% of instructions in one or two system clocks for efficient processing.
• On-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without external emulators.
• Versatile analog peripherals including a 10-bit ADC, programmable comparator, and built-in temperature sensor.

Applications

• Capacitive touch interface designs requiring button, slider, or wheel input detection.
• Low-voltage embedded systems utilizing 1.8 V to 3.6 V power supplies.
• Data acquisition applications leveraging the high-speed 10-bit ADC and temperature sensor.
• Industrial control environments operating within extended temperature ranges.

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm package type matches design requirements, as this model is available in QSOP-24. Check current lifecycle status, as the datasheet indicates this family is not recommended for new designs. Ensure compatibility with existing development tools like Simplicity Studio for programming and debugging needs.

Selection Notes

Select this MCU when capacitive sensing integration is required alongside standard 8051 functionality. Consider the 16 kB Flash limit for application code size constraints. Evaluate the 10-bit ADC resolution against signal precision requirements. Verify that the 1.8 V minimum supply voltage aligns with the system power architecture. Assess pin count availability in the QSOP-24 package for I/O expansion needs.

Part Context

This component belongs to the C8051F80x-83x series of mixed-signal ISPs Flash MCUs by Silicon Labs. The series emphasizes high integration with analog and digital peripherals on a single chip. The C8051F800 variant specifically offers 16 kB of program memory. The family shares common architectural features but varies in memory size and peripheral configurations across different suffixes.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material. Consult the official ordering information table for alternative variants within the C8051F80x-83x family that may offer different memory sizes or package options while maintaining functional compatibility.