C8051F801-GMR

Overview

The C8051F801-GMR is an 8-bit mixed-signal microcontroller from the Silicon Labs C8051F80x-83x family, featuring a CIP-51 core with up to 25 MIPS throughput at a 25 MHz clock. It integrates 16 kB of in-system programmable Flash and 512 bytes of internal data RAM. The device includes a 10-bit ADC supporting up to 500 ksps, a capacitance-to-digital converter for sensing applications, and multiple digital peripherals including UART, SMBus, and SPI. Operating on a 1.8 V to 3.6 V supply, it supports QFN-20 packaging and functions within a temperature range of –40 °C to +85 °C.

Feature Summary

• Integrates a high-speed pipelined CIP-51 microcontroller core capable of executing most instructions in one or two system clocks.
• Includes a capacitance-to-digital converter supporting auto-scan, wake-on-touch, and multi-sample accumulation for proximity sensing.
• Features 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 for power management.

Applications

• Capacitive touch sensing interfaces such as buttons, sliders, and wheels
• Portable battery-powered devices requiring low-voltage operation
• Industrial control systems utilizing analog signal acquisition
• Embedded systems requiring in-system programming capabilities

Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm package marking matches the specific suffix requirements. Check for end-of-life notices as this family may be discontinued. Ensure environmental compliance documentation aligns with project specifications. Validate that the ordering code corresponds to the exact memory and peripheral configuration required.

Selection Notes

Select this model when 16 kB of Flash memory and 512 bytes of RAM are sufficient for application logic. Choose the QFN-20 package for compact surface-mount designs. Consider the integrated capacitance sensing features if touch interface functionality is needed. Verify that the 1.8 V to 3.6 V supply voltage range matches the system power architecture. Ensure the 25 MHz maximum clock speed meets real-time processing requirements.

Part Context

This component belongs to the C8051F80x-83x mixed-signal ISP Flash MCU family from Silicon Labs. The series is characterized by its fully integrated mixed-signal capabilities and compatibility with standard 8051 development tools. The GMR suffix indicates a tape-and-reel packaging variant suitable for automated assembly processes.

Replacement Considerations

Consult official Silicon Labs documentation for confirmed substitute part numbers within the same family. Verify pinout compatibility and peripheral equivalence before substitution. Review datasheet revisions for any functional changes in newer variants.