C8051F806-GUR

Overview

The C8051F806-GUR is an 8-bit mixed-signal microcontroller from the Silicon Labs C8051F80x-83x family. It features a high-speed CIP-51 core operating at up to 25 MHz with 25 MIPS throughput. 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 supporting up to 500 ksps, a capacitance-to-digital converter for capacitive sensing, and a comparator. Digital interfaces comprise UART, SMBus, and SPI. It operates on a supply voltage of 1.8 V to 3.6 V within a temperature range of –40 °C to +85 °C.

Feature Summary

• Integrates a capacitance-to-digital converter supporting buttons, sliders, wheels, and proximity sensing with auto-scan capabilities.
• Features a pipelined CIP-51 core executing 70% of instructions in one or two system clocks for high throughput.
• Includes on-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without external emulators.
• Provides flexible port I/O assignment via a priority crossbar decoder for analog and digital function mapping.

Applications

• Capacitive touch interface designs requiring button, slider, or wheel detection.
• Low-voltage embedded systems utilizing in-system programming for firmware updates.
• Mixed-signal applications integrating analog sensing with digital control logic.

Procurement Notes

Verify component authenticity through authorized channels as this part is marked Not Recommended for New Designs. Confirm package type matches design requirements since the datasheet lists multiple options. Check for specific ordering suffixes that may indicate variations in temperature grade or packaging format. Ensure compatibility with existing development tools given the legacy status of the series.

Selection Notes

Select this component when a highly integrated 8-bit MCU with built-in capacitive sensing is required. The CIP-51 architecture offers superior performance compared to traditional 8051 cores. Consider the available I/O count and peripheral set against application needs. Evaluate power consumption profiles across different clock speeds and sleep modes for battery-operated constraints.

Part Context

This device belongs to the C8051F80x-83x family of mixed-signal ISP Flash MCUs. The family shares a common architecture but varies in memory size and peripheral configurations. The C8051F806 variant specifically provides 16 kB of Flash and standard analog peripherals. It is designed for cost-sensitive applications requiring robust digital and analog integration on a single chip.

Replacement Considerations

Consult the official product selection guide for direct pin-compatible alternatives within the same family. Verify if newer generations offer equivalent functionality with improved availability. Ensure software compatibility when migrating between variants with differing peripheral counts or memory sizes.

FAQ

What is the maximum sampling rate of the integrated ADC?

The 10-bit ADC supports a maximum sampling rate of up to 500 ksps.

How does the device handle capacitive sensing?

It includes a capacitance-to-digital converter that supports auto-scan and wake-on-touch features for detecting buttons, sliders, and proximity.

Is external debugging hardware required?

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