C8051F822-GS

Overview

The C8051F822-GS is a mixed-signal ISP Flash MCU from the C8051F80x-83x family, featuring a high-speed 8051 core with up to 25 MIPS throughput at 25 MHz. It includes up to 16 kB of in-system programmable Flash and 256 bytes of internal data RAM. Key peripherals include a 10-bit ADC supporting up to 500 ksps, a capacitive sense module with 16-bit resolution, comparators, and digital interfaces such as UART, SMBus, and SPI. The device operates on a supply voltage of 1.8 to 3.6 V and supports packages including 16-pin SOIC.

Feature Summary

• Integrated capacitive sense module supporting buttons, sliders, wheels, and proximity sensing with auto-scan capabilities.
• High-speed pipelined 8051 core executing 70% of instructions in one or two system clocks for efficient processing.
• On-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without external emulators.
• Flexible clock sources allowing on-the-fly switching between internal oscillators and external crystals or RC circuits.

Applications

• Capacitive touch interface implementations
• Portable battery-powered instrumentation
• Industrial control systems requiring analog signal acquisition
• Low-power embedded monitoring devices

Procurement Notes

Verify component authenticity through authorized Silicon Labs distributors. Confirm package type matches design requirements, as variants exist in SOIC, QFN, and QSOP. Check revision status as this family may be marked Not Recommended for New Designs; validate long-term availability if continuing production.

Selection Notes

Select based on required memory size and peripheral count within the F80x-83x range. Ensure voltage range compatibility with target application power supplies. Consider package constraints for PCB layout. Verify that the specific suffix indicates the correct temperature grade and packaging format for manufacturing needs.

Part Context

Part of the C8051F80x-83x mixed-signal microcontroller family designed for cost-sensitive applications requiring integrated analog and digital functions. This series emphasizes ease of development with built-in debug and programming capabilities, targeting markets where system complexity reduction is critical.

Replacement Considerations

Consult official Silicon Labs documentation for current lifecycle status. If EOL, consider migrating to newer 8-bit families such as the EFM8 series which offer updated features and support.

FAQ

Does the C8051F822-GS support USB connectivity?

No, the C8051F822-GS does not integrate a USB controller. It focuses on analog peripherals like ADC and capacitive sense rather than USB interfaces.

What is the maximum sampling rate of the ADC?

The integrated 10-bit ADC supports sampling rates up to 500 ksps.