C8051F825-GSR

Overview

The C8051F825-GSR is a mixed-signal ISP Flash microcontroller from the Silicon Labs C8051F80x-83x family. It features a high-speed 8051 core with up to 25 MIPS throughput at a 25 MHz clock frequency. The device includes up to 16 kB of in-system programmable Flash memory and up to 512 bytes of internal data RAM. Key analog peripherals consist of a 10-bit ADC supporting up to 500 ksps, a capacitive sense module with 16-bit resolution, and a comparator. Digital interfaces include an enhanced UART, SMBus, and SPI. It operates on a supply voltage of 1.8 to 3.6 V within a temperature range of –40 to +85 °C.

Feature Summary

• Integrated capacitive sense module supporting buttons, sliders, wheels, and proximity sensing with auto-scan capabilities.
• On-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without external emulators.
• High-speed pipelined 8051 core executing 70% of instructions in one or two system clocks for efficient processing.
• In-system programmable Flash memory allowing field upgrades and non-volatile data storage in 512-byte sectors.

Applications

• Capacitive touch interface implementations such as buttons, sliders, and wheels.
• Mixed-signal control systems requiring integrated analog-to-digital conversion.
• Embedded applications utilizing USBXpress-compatible host and device software solutions.
• Portable devices benefiting from low-power management modes and compact package options.

Procurement Notes

Verify the specific suffix 'GSR' against the manufacturer's current ordering guide to confirm package type and tape-and-reel specifications. Confirm end-of-life status as the C8051F80x-83x family is marked Not Recommended for New Designs. Ensure compatibility with existing design constraints before procurement.

Selection Notes

Select this component when a complete mixed-signal solution with capacitive sensing is required. The integrated oscillator and debug interface reduce external component count. Evaluate the 10-bit ADC speed and capacitive sense channel count against application requirements. Consider the limited availability due to the Not Recommended for New Designs status.

Part Context

This part belongs to the C8051F80x-83x series of mixed-signal microcontrollers. These devices are designed for cost-sensitive applications requiring high integration. The family shares common architectural features including the CIP-51 core and extensive peripheral sets. This specific model variant offers defined memory and I/O configurations within the broader series.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. The C8051F80x-83x family is designated as Not Recommended for New Designs. Designers should consult official replacement guides or contact the manufacturer for qualified alternatives.