C8051F912-GM

Overview

The C8051F912-GM is an 8-bit microcontroller featuring a high-speed 8051 core with up to 25 MIPS throughput at a 25 MHz clock. It integrates 16 kB of in-system programmable Flash memory and 768 bytes of RAM. The device includes a 12-bit SAR ADC with up to 15 external inputs, two comparators, and a built-in DC-DC converter supporting operation from 0.9 V to 3.6 V. Digital peripherals include hardware SMBus, dual SPI, UART, four general-purpose timers, and a Programmable Counter Array. It operates within a temperature range of –40 °C to +85 °C and is housed in a 24-pin QFN package.

Feature Summary

• Ultra-low power architecture with sleep modes as low as 10 nA and rapid wake-up capabilities
• Integrated 12-bit analog-to-digital converter with auto-averaging accumulator and burst mode for enhanced resolution
• Built-in DC-DC converter enables efficient single-cell battery operation down to 0.9 V
• Comprehensive digital peripheral set including multiple serial interfaces and timer arrays

Applications

• Single or dual battery powered devices requiring extended runtime
• Sensor interface applications utilizing the high-resolution ADC and temperature sensor
• Low voltage industrial control systems operating on a single cell
• Portable instrumentation benefiting from ultra-low sleep current consumption

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and temperature grade. Confirm component availability status as distribution channels may list obsolete inventory. Ensure compatibility with existing PCB footprints for the 24-pin QFN configuration before finalizing procurement decisions.

Selection Notes

Select this model when a 12-bit ADC resolution is required alongside low-voltage operation capabilities. The integrated DC-DC converter makes it suitable for designs constrained by single-cell battery supplies. Consider the available digital peripherals and interrupt handling features if complex real-time processing is needed within a compact form factor.

Part Context

This component belongs to the Silicon Labs C8051F9xx series of mixed-signal microcontrollers. The series is characterized by its highly integrated nature, combining a fast 8051 core with extensive analog and digital peripherals. The C8051F91x variant specifically denotes the inclusion of 16 kB Flash and the 12-bit ADC capability compared to other members in the family.

Replacement Considerations

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