C8051F825-GS

Overview

The C8051F825-GS is a mixed-signal ISP Flash microcontroller from the Silicon Labs C8051F80x-83x family. It features an 8-bit 8051 core operating at up to 25 MHz, providing 25 MIPS throughput. The device includes 8 kB of in-system programmable Flash memory and 512 bytes of internal data RAM. Key peripherals include a 10-bit ADC with up to 500 ksps sampling rate, a capacitance-to-digital converter for capacitive sensing, and multiple digital communication interfaces such as UART, SMBus, and SPI.

Feature Summary

• Integrated capacitance-to-digital converter supporting buttons, sliders, wheels, and proximity sensing with auto-scan capabilities.
• High-speed pipelined 8051 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.
• Comprehensive analog peripherals including a 10-bit ADC, programmable comparators, and built-in temperature sensor.

Applications

• Capacitive touch interface designs requiring button, slider, or wheel detection.
• Embedded systems needing high-speed analog-to-digital conversion for sensor data acquisition.
• Applications utilizing in-system programming for field firmware upgrades via Flash memory.
• Low-power embedded controllers requiring on-chip debug and minimal external component count.

Procurement Notes

Verify the specific package variant (SOIC-16, QSOP-24, or QFN-20) required for your design, as the base part number covers multiple packages. Confirm that the C8051F80x-83x family status is acceptable for your project lifecycle, as documentation indicates these devices are not recommended for new designs. Ensure compatibility with existing development tools for the CIP-51 core and C2 interface.

Selection Notes

Select this component when a highly integrated mixed-signal MCU is needed with specific emphasis on capacitive sensing and fast ADC performance. The 8 kB Flash and 512-byte RAM configuration suits moderate complexity control applications. Consider the available I/O pin counts and peripheral sets defined in the specific package variant's block diagram to ensure sufficient connectivity for the target system architecture.

Part Context

The C8051F825-GS belongs to the C8051F80x-83x series of mixed-signal microcontrollers. This family is characterized by its high integration, combining a standard 8051 core with extensive analog and digital peripherals on a single chip. The series supports various package options to accommodate different board space and pin count requirements while maintaining consistent core functionality across the lineup.

Replacement Considerations

Public confirmed substitute part numbers: None identified in verified sources.