C8051F712-GMR

Overview

The C8051F712-GMR is an 8-bit mixed-signal ISP Flash MCU from the C8051F70x/71x family, manufactured by Silicon Labs. It features a high-speed pipelined 8051 core operating at up to 25 MIPS with a 25 MHz clock. The device includes 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, and an analog comparator. Digital interfaces comprise UART, SMBus, and SPI. 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

• Capacitance-to-Digital Converter supports buttons, sliders, wheels, capacitive proximity, and touch screen sensing with auto-scan capabilities.
• On-chip debug circuitry facilitates full speed, non-intrusive in-system debug without requiring external emulation hardware.
• High-Speed 8051 µC Core utilizes a pipelined instruction architecture that executes 70% of instructions in 1 or 2 system clocks.
• Integrated Voltage Supply Monitor ensures stable operation across the specified supply voltage range.

Applications

• Capacitive sensing applications including buttons, sliders, and touch screens
• Mixed-signal control systems requiring analog-to-digital conversion
• In-system programming and debugging environments
• Portable devices operating on low voltage supplies

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for specific package variants matching the required pin count. Review the datasheet revision history for any errata or design changes relevant to production integration. Ensure storage conditions adhere to moisture sensitivity level requirements prior to soldering.

Selection Notes

Select this component when a complete mixed-signal solution with integrated capacitance sensing is required. The inclusion of on-chip debug reduces development time and hardware costs compared to traditional emulator setups. Consider the 10-bit ADC resolution and sampling rate against application signal processing needs. Evaluate the 1.8 V to 3.6 V supply range compatibility with the target system power architecture.

Part Context

This microcontroller belongs to the C8051F70x/71x series, which are fully static 8-bit MCUs combining a high-speed controller core with extensive on-chip peripheral functionality. The family is designed for cost-sensitive applications requiring robust analog performance and digital connectivity in a compact footprint.

Replacement Considerations

Consult the official ordering guide for cross-referenced part numbers within the same package and memory configuration. Verify pinout compatibility and electrical specifications before substituting with other members of the C8051F7xx family or alternative 8-bit MCU families.

FAQ

What is the maximum throughput of the CPU core?

The high-speed 8051 µC core delivers up to 25 MIPS throughput when operating at a 25 MHz clock frequency.

How does the on-chip debug feature benefit development?

It allows for full-speed, non-intrusive in-system debugging, providing breakpoints and single-stepping capabilities without the need for external emulator chips or sockets.

What types of inputs can the Capacitance-to-Digital Converter handle?

It supports buttons, sliders, wheels, capacitive proximity detection, and touch screen sensing, with up to 38 input channels available.