C8051F811-GS

Overview

The C8051F811-GS is an 8-bit mixed-signal ISP Flash microcontroller from the C8051F80x-83x family by Silicon Labs. It features a high-speed pipelined 8051 core delivering up to 25 MIPS at 25 MHz. The device integrates 16 kB of in-system programmable Flash memory and 512 bytes of internal data RAM. Key peripherals include a 10-bit ADC with up to 500 ksps throughput, a capacitive sense module, comparators, and multiple digital interfaces such as UART, SMBus, and SPI. It operates on a supply voltage of 1.8 V to 3.6 V and supports packages including SOIC-16.

Feature Summary

• Integrates a high-speed pipelined 8051 core for efficient instruction execution.
• Includes a capacitive sense module supporting buttons, sliders, and proximity sensing.
• Features on-chip debug circuitry for full-speed, non-intrusive in-system debugging.
• Provides mixed-signal capabilities with a 10-bit ADC and programmable comparators.

Applications

• Capacitive touch interface implementations
• Battery-powered sensor nodes
• Industrial control systems
• Consumer electronics

Procurement Notes

Verify component authenticity through authorized channels. Confirm RoHS compliance status via official documentation. Check for end-of-life notifications or discontinuance notices prior to procurement. Ensure storage conditions meet moisture sensitivity level requirements. Validate package type against design specifications.

Selection Notes

Evaluate memory requirements against the 16 kB Flash and 512 B RAM limits. Assess peripheral needs for ADC resolution and capacitive sense channel count. Verify operating voltage compatibility within the 1.8 V to 3.6 V range. Consider package availability and thermal performance for the target environment.

Part Context

This component belongs to the C8051F80x-83x series of mixed-signal microcontrollers. These devices are designed for applications requiring high integration and low power consumption. The series utilizes the CIP-51 architecture, offering compatibility with standard 8051 software while providing enhanced performance and additional analog peripherals.

Replacement Considerations

Consult the manufacturer's product selection guide for compatible alternatives within the same family. Verify pinout and register compatibility before substitution. Review datasheets for any differences in peripheral configurations or electrical characteristics.

FAQ

What is the maximum clock frequency for the C8051F811-GS?

The device supports a system clock of up to 25 MHz, enabling a throughput of 25 MIPS.

Does the C8051F811-GS support capacitive sensing?

Yes, it includes a dedicated Capacitance to Digital Converter (CS0) that supports auto-scan and wake-on-touch functionality.

How is in-system programming handled?

Flash memory can be programmed in-system in 512-byte sectors using the C2 interface without removing the device from the circuit.