C8051F716-GM

Overview

The C8051F716-GM is a mixed-signal ISP Flash microcontroller from Silicon Labs, featuring an 8051 core operating at up to 25 MHz. It integrates 16 kB of in-system programmable Flash memory and 512 bytes of internal data RAM. The device includes a capacitance-to-digital converter supporting up to 38 input channels for touch sensing applications. Analog peripherals consist of a 10-bit ADC with speeds up to 500 ksps and an analog comparator. Digital interfaces include UART, SMBus, and SPI. It operates on a supply voltage range of 1.8 V to 3.6 V within a temperature range of -40 °C to +85 °C, housed in a QFN-32 package.

Feature Summary

• Integrated capacitance-to-digital converter supports buttons, sliders, wheels, and touch screen sensing with auto-scan capabilities.
• High-speed pipelined 8051 core executes 70% of instructions in one or two system clocks for efficient processing.
• On-chip debug circuitry enables full-speed, non-intrusive in-system debugging without external emulators.
• Flexible clock sources allow switching between the internal oscillator and external crystals or RC circuits.

Applications

• Capacitive touch sensing interfaces
• Industrial control systems
• Portable instrumentation

Procurement Notes

Verify component status as this specific part number is marked Not Recommended for New Designs (NRND). Confirm availability through authorized distributors or surplus suppliers. Ensure compatibility with existing PCB layouts due to the QFN-32 package dimensions. Review the latest datasheet revision for any electrical characteristic updates before finalizing procurement plans.

Selection Notes

Select this MCU for designs requiring integrated capacitive touch sensing alongside standard mixed-signal functions. The QFN-32 package suits space-constrained applications. Evaluate the 16 kB Flash limit against firmware requirements. Consider the NRND status for long-term production viability and potential obsolescence risks compared to newer Silicon Labs alternatives.

Part Context

This component belongs to the C8051F70x/71x family of mixed-signal microcontrollers. These devices are designed for high-performance embedded applications requiring analog precision and digital connectivity. The family shares common architectural features such as the CIP-51 core and extensive peripheral sets, differing primarily in memory sizes and pin counts across various packages.

Replacement Considerations

Check for direct substitutes within the C8051F7xx series that offer similar pinouts and peripheral configurations. Verify if newer Silicon Labs 8051-based MCUs provide equivalent functionality with updated supply chain support. Ensure software compatibility when migrating to alternative parts.