C8051F818-GMR

Overview

The C8051F818-GMR is an 8-bit 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 speed. 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, capacitive sense controller, comparators, UART, SMBus, SPI, and PCA. It operates on a supply voltage of 1.8V to 3.6V within a temperature range of -40°C to +85°C.

Feature Summary

• Integrated Capacitance to Digital Converter 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.
• Pipelined instruction architecture executing 70% of instructions in one or two system clocks for efficient processing.
• Hardware-enhanced serial ports including UART, SMBus, and SPI for robust digital communication.

Applications

• Capacitive touch interface implementations
• Embedded USB connectivity systems
• Portable battery-powered devices
• Industrial control monitoring

Procurement Notes

Verify component authenticity through authorized distributors. Confirm package type matches QSOP-24 specifications. Check revision status as this family may be marked Not Recommended for New Designs. Ensure environmental compliance documentation aligns with project requirements.

Selection Notes

Select based on required I/O count and peripheral availability. Compare against other C8051F8xx variants for memory size differences. Consider thermal management for surface mount applications. Verify clock source requirements against internal oscillator accuracy needs.

Part Context

Part of the C8051F80x-83x mixed-signal MCU family designed for cost-sensitive embedded applications. Shares common architecture with QFN-20 and SOIC-16 package variants. Offers single-chip solutions reducing external component count.

Replacement Considerations

Check for EOL notices. Evaluate C8051F9xx series for updated features. Review pin compatibility before substitution.

FAQ

What is the maximum conversion rate of the integrated ADC?

The 10-bit ADC supports up to 500 ksps conversion rates.

Does the device support crystal-less UART operation?

Yes, the internal 24.5 MHz oscillator supports crystal-less UART operation.