C8051F819-GMR

Overview

The C8051F819-GMR is an 8-bit mixed-signal ISP Flash microcontroller from the C8051F80x-83x family. It features a high-speed pipelined 8051 core operating at up to 25 MHz, delivering 25 MIPS throughput. The device includes 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 sampling rate, a capacitance-to-digital converter for capacitive sensing, and a comparator. Communication interfaces consist of hardware-enhanced UART, SMBus (I2C compatible), and enhanced SPI. The unit operates on a supply voltage range of 1.8 V to 3.6 V and supports multiple clock sources.

Feature Summary

• Integrated capacitance-to-digital converter 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 throughput
• Hardware-enhanced serial ports including UART, SMBus, and SPI for robust digital communication

Applications

• Capacitive touch interface implementations such as buttons and sliders
• Portable devices requiring low-voltage operation and integrated analog signal processing
• Systems utilizing in-system programming for firmware updates via ISP
• Applications requiring real-time monitoring through built-in temperature sensors and comparators

Procurement Notes

Verify component status prior to integration, as this series is designated Not Recommended for New Designs. Confirm package availability matches design requirements, specifically QFN-20, QSOP-24, or SOIC-16 options. Review the latest product change notices for assembly or labeling updates. Ensure development tools support the C2 interface for programming and debugging. Validate that existing designs comply with current environmental compliance standards.

Selection Notes

Select this model when legacy C8051F compatibility is required alongside specific peripheral counts found in the F81x variant. Evaluate the 16 kB Flash capacity against application code size constraints. Consider the 1.8 V to 3.6 V operating range for battery-powered systems. Assess the need for the integrated capacitance sensing module versus discrete solutions. Verify pinout compatibility if migrating from other packages within the same family.

Part Context

This component belongs to the Silicon Labs C8051F80x-83x mixed-signal MCU family. These devices are characterized by their combination of high-speed 8051 cores with extensive on-chip analog and digital peripherals. The family emphasizes in-system programmability and comprehensive debug capabilities. They are designed for cost-sensitive applications requiring significant integration in a small footprint.

Replacement Considerations

Public confirmed substitute part numbers: None identified.