C8051F800-GMR

Overview

The C8051F800-GMR is an 8-bit mixed-signal ISP Flash MCU from the Silicon Labs C8051F80x-83x family. It features a high-speed pipelined CIP-51 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. Integrated peripherals include a 10-bit ADC with up to 500 ksps conversion rate, a capacitance-to-digital converter supporting capacitive sensing, and a comparator. Communication interfaces consist of hardware-enhanced UART, SMBus, and SPI ports.

Feature Summary

• Capacitance-to-Digital Converter supports buttons, sliders, wheels, and proximity sensing with auto-scan capabilities
• On-chip debug circuitry enables full-speed non-intrusive in-system debugging without external emulators
• High-speed 8051-compatible core executes 70% of instructions in one or two system clocks
• Hardware-enhanced serial ports including UART, SMBus, and SPI facilitate robust digital communication

Applications

• Capacitive touch sensing applications such as buttons and sliders
• Mixed-signal control systems requiring analog-to-digital conversion
• In-system programming environments for field firmware upgrades
• Low-voltage embedded controller designs

Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm package type matches design requirements, as this model utilizes QFN packaging. Check current lifecycle status, as the datasheet indicates this family is not recommended for new designs. Ensure voltage supply ranges align with target application specifications before procurement.

Selection Notes

Select this component when integrating capacitive sensing with standard 8051 processing is required. Consider the 16 kB Flash capacity for moderate code storage needs. Evaluate the 10-bit ADC resolution against signal precision requirements. Verify that the QFN-20 package fits within the available PCB footprint constraints.

Part Context

This part belongs to the C8051F80x-83x series of fully integrated mixed-signal System-on-Chip MCUs. The family shares common architectural features including the CIP-51 core and peripheral sets. Variations within the series typically differ in Flash size, I/O count, and specific peripheral configurations while maintaining pin compatibility across certain packages.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source documentation.