C8051F801-GM

Overview

The C8051F801-GM is an 8-bit mixed-signal microcontroller from the Silicon Labs C8051F80x family, featuring a high-speed CIP-51 core operating at up to 25 MHz. It integrates 16 kB of in-system programmable Flash memory and 512 bytes of internal data RAM. The device includes a 10-bit ADC with up to 500 ksps throughput, a capacitance-to-digital converter for touch sensing, and multiple digital peripherals including UART, SMBus, and SPI. It operates on a supply voltage range of 1.8 V to 3.6 V within an industrial 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 CIP-51 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.
• Flexible clocking system with an internal 24.5 MHz oscillator and support for external crystal, RC, or capacitor sources.

Applications

• Capacitive touch interface designs requiring button or slider detection
• Industrial control systems utilizing mixed-signal monitoring
• Battery-powered devices leveraging low-voltage operation and power management modes

Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm package type matches design requirements, as this model is available in QFN-20. Check for end-of-life status updates, as the datasheet indicates this family is not recommended for new designs. Ensure environmental compliance documentation aligns with target market regulations before finalizing procurement.

Selection Notes

Select this MCU when a compact 8-bit solution with integrated capacitive sensing is required. The C8051F801-GM offers sufficient Flash and RAM for moderate complexity applications while maintaining a small footprint. Consider alternative models within the F80x series if different pin counts or peripheral configurations are needed. Evaluate power consumption profiles against specific application idle and active state requirements.

Part Context

This component belongs to the C8051F80x-83x mixed-signal ISP Flash MCU family by Silicon Laboratories. The family shares a common architecture but varies in memory size, I/O count, and peripheral availability. The C8051F801 variant specifically provides 16 kB Flash and 512 bytes RAM, positioning it for mid-range embedded applications requiring analog-to-digital conversion and digital communication interfaces.

Replacement Considerations

The datasheet explicitly states that the C8051F80x-83x family is Not Recommended for New Designs. Engineers should evaluate newer Silicon Labs MCU families for long-term supply stability. Direct pin-compatible replacements may not exist; functional equivalents require careful review of register compatibility and peripheral specifications.