C8051F822-GSR

Overview

The C8051F822-GSR 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 a 25 MHz clock. It includes up to 16 kB of in-system programmable Flash and 512 bytes of internal data RAM. Key peripherals comprise a 10-bit ADC (up to 500 ksps), a capacitive sense module with 16 channels, comparators, and digital interfaces including UART, SMBus, and SPI. The device operates on a supply voltage of 1.8 to 3.6 V within a temperature range of –40 to +85 °C.

Feature Summary

• Integrated capacitive sense module supporting buttons, sliders, wheels, and proximity sensing with auto-scan capabilities
• On-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without external emulators
• Pipelined instruction architecture executing 70% of instructions in one or two system clocks for high efficiency
• Flexible clock sources allowing on-the-fly switching between internal oscillators and external crystals

Applications

• Capacitive touch interface implementations
• Battery-powered portable instrumentation
• Industrial control systems requiring analog signal processing
• Low-voltage embedded applications

Procurement Notes

Verify component authenticity through authorized Silicon Labs distributors. Confirm package type matches design requirements as variants exist. Check datasheet revision history for updates. Ensure compliance with RoHS standards if required by project specifications. Validate operating conditions against environmental constraints before integration.

Selection Notes

Select this MCU for designs needing integrated capacitive sensing alongside standard analog conversion. Evaluate memory requirements against the 16 kB Flash limit. Consider power consumption profiles given the 1.8 V minimum supply. Assess pin count availability for required I/O assignments. Review interrupt latency requirements relative to the pipelined core performance.

Part Context

This component belongs to the C8051F80x-83x series of mixed-signal microcontrollers. These devices are designed for cost-sensitive applications requiring high integration. The family shares common architectural features while varying in peripheral counts and memory sizes. This specific model offers a balanced configuration for general-purpose mixed-signal tasks.

Replacement Considerations

Consult the official product selection guide for direct functional equivalents within the same family. Verify pin compatibility and peripheral overlap when considering alternative part numbers. Note that newer designs may require migration to current recommended components.