C8051F814-GUR

Overview

The C8051F814-GUR is an 8-bit mixed-signal microcontroller from the Silicon Labs C8051F80x-83x family, featuring a high-speed 8051 core operating at up to 25 MHz. It integrates 8 kB of in-system programmable Flash memory and 512 bytes of internal data RAM. The device includes a 10-bit ADC with up to 500 ksps throughput, a capacitance-to-digital converter supporting capacitive touch sensing, and multiple digital peripherals including UART, SMBus, and SPI. It operates on a supply voltage range of 1.8 V to 3.6 V and is available in a QSOP-24 package.

Feature Summary

• Integrated capacitance-to-digital converter supports buttons, sliders, wheels, and proximity sensing with auto-scan capabilities.
• On-chip debug circuitry enables full-speed, non-intrusive in-system debugging without external emulators.
• Pipelined instruction architecture executes 70% of instructions in one or two system clocks for efficient processing.
• Hardware-enhanced serial ports include UART, SMBus, and SPI for versatile communication interfaces.

Applications

• Capacitive touch sensing applications such as buttons and sliders
• Mixed-signal control systems requiring analog-to-digital conversion
• Embedded systems utilizing in-system programming and debugging

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for moisture sensitivity labeling prior to handling. Ensure storage conditions meet specified humidity requirements to prevent damage. Review the datasheet for absolute maximum ratings to avoid operational failures during procurement and integration.

Selection Notes

Select this MCU for designs requiring integrated capacitive touch sensing alongside standard 8051 functionality. Consider the 25 MHz clock speed and 8 kB Flash capacity against application memory needs. Evaluate the 1.8 V to 3.6 V supply range for power compatibility. Verify that the QSOP-24 package fits the PCB layout constraints and thermal requirements of the target design.

Part Context

This component belongs to the C8051F80x-83x mixed-signal ISP Flash MCU family by Silicon Labs. The family shares common architectural features including the CIP-51 core and peripheral sets. Specific variants within the series differ primarily in memory sizes and pin counts. The C8051F814-GUR represents a specific configuration within this broader product line.

Replacement Considerations

Consult the official datasheet for compatible alternatives within the C8051F8xx series. Verify pinout and memory specifications when substituting. No public confirmed substitute part numbers are identified in the provided documentation.