C8051F818-GUR

Overview

The C8051F818-GUR is an obsolete mixed-signal ISP Flash microcontroller from Silicon Labs, part of the C8051F80x-83x family. It features a high-speed 8051 core operating at up to 25 MHz with 25 MIPS throughput. The device integrates 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, and standard serial interfaces such as UART, SMBus, and SPI. It operates on a supply voltage ranging from 1.8 V to 3.6 V within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrates a capacitance-to-digital converter supporting buttons, sliders, wheels, and proximity sensing with fast conversion times.
• Features a pipelined instruction architecture that executes most instructions in one or two system clocks for efficient processing.
• Includes on-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without external emulators.
• Provides flexible clock sources including an internal oscillator and support for external crystals, RC, or capacitor configurations.

Applications

• Capacitive touch interface implementations
• Industrial control systems requiring mixed-signal processing
• Portable devices utilizing low-voltage operation

Procurement Notes

This component is officially marked as Obsolete by Silicon Labs. Verification of end-of-life status and final time buy availability is required before integration into new designs. Confirm package integrity and datasheet revision compatibility with existing hardware schematics.

Selection Notes

Engineers should evaluate alternative members of the C8051F8xx series or newer Silicon Labs MCU families for new projects due to the discontinued status of this specific part number. Ensure that required peripheral counts and memory sizes are met by available replacement options.

Part Context

The C8051F818-GUR belongs to the C8051F80x-83x mixed-signal ISP Flash MCU family. This series combines a standard 8051 core with extensive analog and digital peripherals on a single chip, targeting applications needing cost-effective embedded control with sensor interfacing capabilities.

Replacement Considerations

Consult the manufacturer's product selection guide for direct functional equivalents within the C8051F8xx family or cross-reference compatible devices from other manufacturers offering similar 8-bit architectures and pinouts.

FAQ

What is the maximum clock frequency supported by the C8051F818?

The device supports a maximum system clock frequency of 25 MHz, delivering up to 25 MIPS throughput.

Does the C8051F818 include on-chip debugging capabilities?

Yes, it includes on-chip debug circuitry that facilitates full-speed, non-intrusive in-system debugging without requiring external emulation hardware.