C8051F800-GU

Overview

The C8051F800-GU is an 8-bit mixed-signal ISP Flash MCU from the Silicon Labs C8051F80x-83x family, featuring a high-speed pipelined 8051 core. It integrates up to 16 kB of in-system programmable Flash 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 sensing, and a comparator. Digital interfaces comprise UART, SMBus, and SPI. The device operates on a supply voltage of 1.8 V to 3.6 V and is available in a 24-pin QSOP package.

Feature Summary

• Integrates a capacitance-to-digital converter supporting buttons, sliders, wheels, and proximity sensing with auto-scan capabilities.
• Features a high-speed 8051 microcontroller core with pipelined architecture executing most instructions in one or two system clocks.
• Includes on-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without external emulators.
• Provides analog peripherals including a 10-bit ADC, programmable comparator, and built-in temperature sensor.

Applications

• Capacitive touch sensing applications such as buttons, sliders, and wheels
• Data acquisition systems requiring analog-to-digital conversion
• Embedded control logic with serial communication requirements
• Low-voltage portable electronic devices

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific ordering suffix matches the required package type. Check current lifecycle status as this series may be marked Not Recommended for New Designs. Ensure environmental compliance documentation aligns with project requirements before finalizing procurement.

Selection Notes

Select this component when a mixed-signal solution combining standard 8051 processing with capacitive sensing and analog conversion is needed. Evaluate pin count and peripheral availability against the specific application constraints. Consider the operating voltage range and package dimensions for PCB layout compatibility. Review the datasheet for electrical characteristics relevant to the target environment.

Part Context

This part belongs to the C8051F80x-83x family of mixed-signal ISPs Flash MCUs by Silicon Labs. The family shares a common architecture but varies in memory size and peripheral configurations. The C8051F800 variant specifically offers 16 kB of Flash memory. The family is designed for cost-sensitive embedded applications requiring high integration.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material. Consult the manufacturer's product selection guide for alternative members within the C8051F80x-83x family that offer compatible pinouts and feature sets.