C8051F802-GU

Overview

The C8051F802-GU is an 8-bit mixed-signal microcontroller from Silicon Labs, part of the C8051F80x-83x family. It features a high-speed pipelined 8051 core operating at up to 25 MHz with 25 MIPS throughput. The device includes 16 KB of in-system programmable Flash memory and 512 bytes of internal data RAM. Key peripherals include a 10-bit ADC supporting up to 500 ksps, a capacitive sense module, comparators, and standard digital interfaces such as UART, SMBus, and SPI. It operates on a supply voltage of 1.8 V to 3.6 V within a temperature range of –40 °C to +85 °C.

Feature Summary

• Integrated capacitive sense module for touch sensing applications
• On-chip debug circuitry for non-intrusive in-system debugging
• High-speed pipelined 8051 architecture for efficient instruction execution
• Mixed-signal capabilities with analog peripherals including ADC and comparators

Applications

• Capacitive button, slider, or wheel sensing interfaces
• Low-power embedded control systems
• Data acquisition devices requiring analog-to-digital conversion
• Industrial monitoring equipment

Procurement Notes

Verify component status before procurement as this series is marked Not Recommended for New Designs. Confirm package type matches design requirements. Check for obsolescence notices or lifecycle changes from the manufacturer. Ensure compatibility with existing development tools and debug adapters. Review electrical specifications against current system constraints.

Selection Notes

Select this component for legacy designs utilizing the C8051F80x family. Consider the limited pin count and peripheral set relative to newer alternatives. Evaluate if the 16 KB Flash and 512 bytes RAM meet application memory needs. Assess whether the specific analog features like capacitive sense are required over simpler GPIO solutions.

Part Context

This MCU belongs to the C8051F80x-83x mixed-signal ISP Flash MCU family by Silicon Labs. The family shares a common architecture but varies in memory size and peripheral availability. The C8051F802-GU specifically utilizes a 24-pin QSOP package. It represents a segment of highly integrated single-chip solutions designed for cost-sensitive and space-constrained embedded applications.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. As the family is marked Not Recommended for New Designs, consult Silicon Labs for current recommended alternatives.