C8051F804-GS

Overview

The C8051F804-GS is a mixed-signal ISP Flash MCU from Silicon Labs, featuring a high-speed 8051 core with up to 25 MIPS throughput at 25 MHz. 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 supporting up to 500 ksps, a Capacitance to Digital Converter with 16-bit resolution, and a comparator. The device operates on a supply voltage of 1.8 to 3.6 V and supports digital interfaces such as UART, SMBus, and SPI.

Feature Summary

• Integrated Capacitance to Digital Converter for capacitive sensing applications
• High-speed pipelined 8051 core executing most instructions in one or two system clocks
• On-chip debug circuitry enabling full-speed non-intrusive in-system debugging
• Hardware-enhanced serial ports including UART, SMBus, and SPI

Applications

• Capacitive touch sensing systems
• Data acquisition modules
• Industrial control interfaces
• Portable instrumentation

Procurement Notes

Verify the component status before procurement, as this family is designated Not Recommended for New Designs. Confirm that the specific package variant matches your board layout requirements. Ensure design reviews account for the discontinued status when planning long-term production lifecycles.

Selection Notes

Select this model for legacy designs requiring integrated capacitance sensing and standard 8051 compatibility. Evaluate if newer Silicon Labs alternatives better suit current projects due to the Not Recommended for New Designs status. Consider pinout compatibility and peripheral availability relative to other members of the C8051F80x-83x family.

Part Context

This part belongs to the C8051F80x-83x Mixed Signal ISP Flash MCU Family. These devices are highly integrated System-on-Chip solutions combining microcontroller cores with extensive analog and digital peripherals. The family targets cost-sensitive applications requiring robust mixed-signal capabilities within small form factor packages.

Replacement Considerations

Consult official Silicon Labs documentation for direct cross-references. No public confirmed substitute part numbers are listed in the provided datasheet.