C8051F851-C-GM

Overview

The C8051F851-C-GM is an 8-bit microcontroller from the Silicon Labs C8051F85x/86x family, featuring a high-speed CIP-51 core operating at up to 25 MHz. It integrates 8 kB of in-system programmable Flash memory and 512 Bytes of RAM. The device includes a 12-bit ADC with up to 16 input channels, two analog comparators, and multiple communication interfaces including UART, I2C/SMBus, and SPI. It operates within a supply voltage range of 2.2 V to 3.6 V and is available in a 24-pin QSOP package.

Feature Summary

• High-performance CIP-51 core with pipelined architecture supporting standard 8051 instruction sets
• Integrated 12-bit Analog-to-Digital Converter with configurable sampling rates and reference options
• On-chip debug circuitry enabling non-intrusive system debugging without external emulators
• Versatile peripheral set including four 16-bit timers, Programmable Counter Array, and CRC engine

Applications

• Battery chargers
• Electronic toys and games
• Motor control systems
• Optical communications

Procurement Notes

Verify component status as this model may be marked Not Recommended for New Designs. Confirm package type matches project requirements, specifically the 24-pin QSOP variant for this suffix. Ensure compatibility with existing design infrastructure given the end-of-life recommendation. Check for updated documentation revisions before finalizing procurement plans.

Selection Notes

Select this MCU for applications requiring low-cost 8-bit processing with integrated analog capabilities. The CIP-51 core offers efficient execution while maintaining software compatibility with legacy 8051 codebases. Consider the specific pin count and peripheral needs against other members of the C8051F85x family if different packaging or memory configurations are required.

Part Context

This component belongs to the C8051F85x/86x series of mixed-signal microcontrollers. These devices are designed to provide a complete system-on-chip solution by combining digital processing with essential analog peripherals. The series emphasizes cost-effectiveness and ease of integration for embedded control applications.

Replacement Considerations

Consult official Silicon Labs documentation for qualified substitute part numbers within the same family. Verify functional equivalence regarding memory size, package dimensions, and electrical specifications before transitioning designs.