C8051F813-GU

Overview

The C8051F813-GU is an 8-bit mixed-signal ISP Flash microcontroller from the C8051F80x-83x family, manufactured by Silicon Labs. It features a high-speed pipelined 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 supporting up to 500 ksps, a capacitance-to-digital converter for capacitive sensing, and multiple digital communication interfaces including UART, SMBus, and SPI. It operates within a supply voltage range of 1.8 V to 3.6 V and is available in a 24-pin QSOP package.

Feature Summary

• Integrates a capacitance-to-digital converter supporting buttons, sliders, wheels, and proximity sensing with fast conversion times.
• Features on-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without external emulators.
• Includes a high-speed 8051 μC core with pipelined architecture executing most instructions in one or two system clocks.
• Provides hardware-enhanced serial ports including UART, SMBus, and SPI alongside general-purpose I/O.

Applications

• Capacitive touch sensing applications such as buttons, sliders, and wheels
• Mixed-signal data acquisition systems utilizing the onboard ADC and temperature sensor
• Low-voltage embedded control systems requiring in-system programming capabilities

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific ordering suffix matches the required package type and temperature rating. Check current lifecycle status as this family may be marked Not Recommended for New Designs. Ensure compatibility with existing design tools and development kits before procurement.

Selection Notes

Select this model when a low-cost 8-bit MCU with integrated capacitive sensing is required. Compare pin counts and peripheral sets against other members of the C8051F8xx family for optimal fit. Consider the 24-pin QSOP package constraints for PCB layout. Evaluate power consumption requirements against the 1.8 V to 3.6 V operating range and available power management modes.

Part Context

This component belongs to the C8051F80x-83x series of mixed-signal microcontrollers. The family shares a common architecture but varies in memory size and peripheral configurations. The C8051F813 variant specifically offers 8 kB Flash and 512 bytes RAM. Development support includes the 8-bit Microcontroller Studio and compatible debug probes.

Replacement Considerations

Consult the product selection guide in the datasheet for pin-compatible or functionally similar devices within the same family. Verify that alternative parts meet the specific memory and peripheral requirements of the original design.