C8051F808-GMR

Overview

The C8051F808-GMR is an 8-bit mixed-signal ISP Flash microcontroller from the Silicon Labs C8051F80x-83x family. It features a high-speed CIP-51 core operating at up to 25 MIPS with a 25 MHz clock. 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, capacitive sense interface, 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.
• High-speed pipelined 8051 core executing 70% of instructions in one or two system clocks for efficient processing.
• Comprehensive analog peripherals including a multi-channel 10-bit ADC and programmable comparators with hysteresis.

Applications

• Capacitive touch sensing interfaces for buttons and sliders
• In-system programming and debugging environments
• Mixed-signal control applications requiring ADC and comparator functions
• Low-voltage embedded systems utilizing serial communication protocols

Procurement Notes

Verify component authenticity through authorized distributors. Confirm package type matches design requirements as variants exist. Check current status as this family may be restricted for new designs. Ensure environmental compliance documentation aligns with target market regulations. Validate pinout compatibility during integration planning.

Selection Notes

Evaluate memory requirements against the 16 kB Flash and 512 byte RAM limits. Consider peripheral needs such as ADC resolution and capacitive sense channels. Assess power supply constraints given the 1.8V to 3.6V operating range. Review package options including QFN-20 and QSOP-24 for physical fit. Compare performance metrics with newer alternatives if new design approval is required.

Part Context

This component belongs to the C8051F80x-83x mixed-signal ISP Flash MCU family by Silicon Labs. The series integrates standard 8051 functionality with advanced analog and digital peripherals on a single chip. It targets applications needing cost-effective, low-power microcontrollers with extensive I/O and conversion capabilities.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult manufacturer resources for potential obsolescence management strategies or next-generation equivalents within the same product line.

FAQ

What is the maximum throughput of the CIP-51 core?

The CIP-51 core achieves up to 25 MIPS throughput when operating at a 25 MHz clock frequency.

Does the C8051F808-GMR support capacitive sensing?

Yes, it includes a capacitance-to-digital converter that supports buttons, sliders, wheels, and capacitive proximity sensing with fast conversion times.

Is external debugging hardware required for development?

No, the device features on-chip debug circuitry that facilitates full-speed, non-intrusive in-system debug without requiring an emulator.