C8051F801-GU

Overview

The C8051F801-GU is an 8-bit mixed-signal microcontroller from the Silicon Labs C8051F80x-83x family, featuring a CIP-51 core operating at up to 25 MHz. It integrates 16 kB of in-system programmable Flash 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 sensing applications, and multiple digital peripherals including UART, SMBus, SPI, and PCA. It operates on a supply voltage range of 1.8 V to 3.6 V and is housed in a 24-pin QSOP package.

Feature Summary

• Integrates a high-speed CIP-51 8051 core with pipelined architecture for efficient instruction execution.
• Includes a capacitance-to-digital converter supporting buttons, sliders, wheels, and proximity sensing with auto-scan capabilities.
• Features on-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without external emulators.
• Provides flexible clock sources including an internal 24.5 MHz oscillator and support for external crystals or RC circuits.

Applications

• Capacitive touch sensing interfaces such as buttons and sliders
• Low-voltage embedded control systems requiring analog signal acquisition
• Industrial monitoring devices utilizing serial communication protocols

Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm package marking matches the 24-pin QSOP specification. Review the datasheet revision history for any engineering change notices affecting pinout or electrical characteristics. Ensure design compliance with the stated operating temperature range and voltage limits.

Selection Notes

Select this component when a cost-effective 8-bit MCU with integrated capacitive sensing is required. It is suitable for designs needing moderate processing speed and analog conversion within a small footprint. Consider alternative packages like QFN or SOIC if different board layout constraints apply. Verify that the 1.8 V to 3.6 V supply range aligns with the system power architecture.

Part Context

This part belongs to the C8051F80x-83x mixed-signal ISP Flash MCU family by Silicon Laboratories. The series is characterized by high integration of analog and digital peripherals on a single chip. It targets applications demanding low power consumption and robust connectivity options in compact form factors.

Replacement Considerations

Consult the manufacturer's product selection guide for direct substitutes within the C8051F80x-83x family. Verify pin compatibility and peripheral availability before transitioning to variants with different memory sizes or package types.