C8051F702-GQR

Overview

The C8051F702-GQR is an 8-bit mixed-signal ISP Flash microcontroller from the Silicon Labs C8051F70x family, housed in a 64-pin TQFP package. It features a high-speed 8051 core operating at up to 25 MHz with 25 MIPS throughput. The device integrates 16 kB of in-system programmable Flash memory, 512 bytes of internal data RAM, and 32 bytes of data EEPROM. Key analog peripherals include a 10-bit ADC supporting up to 500 ksps, a capacitance-to-digital converter for touch sensing, and an analog comparator. Digital interfaces encompass UART, SMBus, and SPI.

Feature Summary

• Integrates a capacitance-to-digital converter supporting up to 38 input channels for capacitive proximity and touch screen applications.
• Features a pipelined instruction architecture that executes 70% of instructions in one or two system clocks for high processing efficiency.
• Includes on-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without external emulators.
• Supports flexible clock source selection including a precision internal oscillator and external crystal options.

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. Confirm package type matches the 64-TQFP specification. Ensure design reviews account for end-of-life implications if applicable. Validate supply voltage requirements against the 1.8V to 3.6V range during integration.

Selection Notes

Select this component for designs requiring integrated capacitive sensing capabilities alongside standard 8-bit MCU functions. Consider the 64-pin TQFP footprint for PCB layout constraints. Evaluate the 10-bit ADC resolution and speed against application signal requirements. Review the available digital peripherals to ensure sufficient interface compatibility.

Part Context

This device belongs to the C8051F70x/71x mixed-signal ISP Flash MCU family produced by Silicon Laboratories. The family shares common architectural features such as the CIP-51 core and extensive analog integration. The GQR suffix denotes the specific 64-pin TQFP package variant within this series.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the verified documentation. Consult official manufacturer resources for current lifecycle status and potential alternative recommendations.

FAQ

What is the maximum sampling rate of the onboard ADC?

The 10-bit Analog to Digital Converter supports sampling rates of up to 500 ksps.

How many input channels does the capacitance-to-digital converter support?

The capacitance-to-digital converter supports up to 38 input channels for sensing applications.

Is external debugging hardware required for development?

No, the device includes on-chip debug circuitry that facilitates full-speed, non-intrusive in-system debugging without requiring an emulator.