C8051F712-GQ

Overview

The C8051F712-GQ is a mixed-signal ISP Flash MCU from the C8051F70x/71x family, manufactured by Silicon Labs. It features a high-speed 8051 µC core with up to 25 MIPS throughput at a 25 MHz clock. The device includes 16 kB of in-system programmable Flash memory, 512 bytes of internal data RAM, and up to 32 bytes of data EEPROM. Key analog peripherals include a 10-bit ADC supporting up to 500 ksps, a Capacitance to Digital Converter (CS0) for touch sensing, and an analog comparator. It operates on a supply voltage of 1.8 to 3.6 V within a temperature range of –40 to +85 °C.

Feature Summary

• Integrates a Capacitance to Digital Converter (CS0) supporting up to 38 input channels for buttons, sliders, wheels, and touch screen sensing.
• Features a pipelined instruction architecture that executes 70% of instructions in 1 or 2 system clocks for high-speed processing.
• Includes on-chip debug circuitry facilitating full speed, non-intrusive in-system debugging without requiring external emulators.
• Provides hardware-enhanced digital communication interfaces including UART, SMBus, and SPI serial ports.

Applications

• Capacitive proximity and touch screen sensing systems
• Data acquisition systems utilizing the high-speed ADC
• Battery-powered portable devices due to low voltage operation
• Industrial control applications requiring robust I/O and communication

Procurement Notes

Verify the specific revision level of the datasheet against the manufacturing date code. Confirm package availability as this component is marked Not Recommended for New Designs. Ensure the ordering suffix matches the required pin count and thermal characteristics. Check for any end-of-life notices or alternative part recommendations from the manufacturer before finalizing procurement plans.

Selection Notes

Select this MCU when capacitive sensing capabilities are required alongside standard mixed-signal functions. The 16 kB Flash and 512 B RAM provide sufficient resources for moderate complexity firmware. Consider the 1.8 V to 3.6 V operating range for battery efficiency. Evaluate the 10-bit ADC resolution and speed against application requirements for signal fidelity.

Part Context

This component belongs to the C8051F70x/71x family of fully integrated mixed-signal microcontrollers. These devices combine a high-speed 8051-compatible core with extensive on-chip peripherals. The family is designed for applications needing precise analog-to-digital conversion and digital control in a single chip. The GQ suffix indicates a 64-pin TQFP package variant.

Replacement Considerations

Public confirmed substitute part numbers: None available.