C8051F714-GQR

Overview

The C8051F714-GQR is a mixed-signal ISP Flash MCU from the Silicon Labs C8051F70x/71x family, featuring a high-speed 8051 core with up to 25 MIPS throughput at 25 MHz. It includes 16 kB of in-system programmable Flash memory, 512 bytes of internal data RAM, and up to 32 bytes of data EEPROM. The device integrates a capacitance-to-digital converter supporting up to 38 input channels for touch sensing, a 10-bit ADC with speeds up to 500 ksps, and an analog comparator. Digital peripherals include hardware UART, SMBus, SPI, four 16-bit timers, and a Programmable Counter Array. 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 for capacitive proximity and touch screen sensing applications
• Features a pipelined 8051 microcontroller core executing 70% of instructions in one or two system clocks
• Includes on-chip debug circuitry enabling full-speed non-intrusive in-system debugging without external emulators
• Supports flexible clock source switching between internal oscillators and external crystals or RC circuits

Applications

• Capacitive button, slider, wheel, and touch screen sensing interfaces
• Embedded systems requiring mixed-signal processing with analog-to-digital conversion
• Low-voltage portable devices operating within 1.8 V to 3.6 V power domains
• Industrial control nodes utilizing hardware serial communication protocols

Procurement Notes

Verify component authenticity through authorized distribution channels due to the Not Recommended for New Designs status. Confirm package integrity and pin alignment against TQFP-48 specifications before integration. Review the official datasheet for any errata or design changes affecting long-term availability. Ensure compliance with RoHS directives if required by the target application environment.

Selection Notes

Select this component when specific capacitance sensing capabilities are required alongside standard 8051 processing. Evaluate the 16 kB Flash size against application code requirements. Consider the 1.8 V minimum supply voltage for battery-operated designs. Verify that the TQFP-48 package dimensions fit the PCB layout constraints. Assess the need for the integrated 10-bit ADC resolution versus simpler digital-only alternatives.

Part Context

This part belongs to the C8051F70x/71x series of mixed-signal microcontrollers designed for cost-sensitive embedded applications. The family emphasizes integrated analog peripherals and capacitive sensing features within a compact footprint. The C8051F714 variant specifically targets applications needing moderate Flash capacity and extensive GPIO flexibility. It represents a transition point in Silicon Labs' portfolio where advanced sensing was added to traditional 8051 architectures.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.