C8051F715-GMR

Overview

The C8051F715-GMR is an 8-bit microcontroller from the Silicon Labs C8051F70x/71x family, utilizing a high-speed pipelined 8051 core capable of up to 25 MIPS at a 25 MHz clock frequency. It features 8 kB of in-system programmable Flash memory and 512 bytes of internal data RAM. The device integrates a capacitance-to-digital converter supporting up to 38 input channels for touch sensing applications, alongside a 10-bit ADC with speeds up to 500 ksps. Digital peripherals include hardware-enhanced UART, SMBus, SPI, four 16-bit timers, and a Programmable Counter Array. Operating within a supply voltage range of 1.8 V to 3.6 V and a temperature range of –40 °C to +85 °C, it is available in a 48-pin QFN package.

Feature Summary

• Integrated capacitance-to-digital converter supports buttons, sliders, wheels, and capacitive proximity sensing with auto-scan capabilities.
• On-chip debug circuitry facilitates full-speed, non-intrusive in-system debugging without requiring external emulation hardware.
• High-speed 8051 CPU executes 70% of instructions in one or two system clocks using a pipelined architecture.
• Flexible clock sources allow on-the-fly switching between internal oscillators and external crystals or RC circuits.

Applications

• Capacitive touch screen sensing interfaces
• Buttons and slider controls in consumer electronics
• Capacitive proximity detection systems
• Low-power embedded control applications

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix matches the required package type and temperature rating. Check current lifecycle status as this series may be marked not recommended for new designs. Ensure ESD handling protocols are followed during storage and assembly due to moisture sensitivity classification.

Selection Notes

Select this model when capacitive sensing integration is required alongside standard 8051 processing. Evaluate pin count requirements against the 48-pin QFN footprint. Consider the 1.8 V to 3.6 V operating range for power supply compatibility. Review peripheral availability such as ADC resolution and timer counts against application needs.

Part Context

This component belongs to the C8051F70x/71x mixed-signal ISP Flash MCU family by Silicon Labs. The family shares a common architecture featuring the CIP-51 core and extensive analog peripherals. Variants within the family differ primarily in Flash size, I/O count, and specific peripheral configurations while maintaining software compatibility.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult official Silicon Labs documentation for obsolescence notices and potential migration paths within the C8051F7xx series.

FAQ

What is the maximum conversion speed of the integrated ADC?

The 10-bit Analog to Digital Converter supports speeds 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.

Does the device require an external emulator for debugging?

No, the on-chip debug circuitry allows for full-speed, non-intrusive in-system debugging without an emulator.