C8051F912-GMR

Overview

The C8051F912-GMR is an 8-bit microcontroller from Silicon Labs 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 75 ksps throughput, two comparators, and a built-in DC-DC converter supporting operation from 0.9 V to 3.6 V. It offers 16 I/O pins, multiple serial interfaces including SMBus, SPI, and UART, and operates within a temperature range of –40 °C to +85 °C.

Feature Summary

• Ultra-low power architecture with sleep modes as low as 300 nA and rapid wake-up capabilities
• Integrated 12-bit analog-to-digital converter with auto-averaging accumulator and programmable gain amplifier
• Built-in DC-DC converter enabling efficient single-cell battery operation down to 0.9 V
• High-performance pipelined 8051 core executing most instructions in one or two system clocks

Applications

• Single or dual battery powered sensor nodes
• Wireless magnetoresistive sensor networks for UXO detection
• Portable medical equipment requiring low voltage operation
• Industrial monitoring systems utilizing capacitive touch inputs

Procurement Notes

Verify the specific suffix 'GMR' indicates tape and reel packaging when sourcing components. Confirm that the part status remains active or check for obsolescence notices prior to final design implementation. Ensure compatibility with existing development tools and debug interfaces supported by the C8051F9xx series.

Selection Notes

Select this component for designs requiring precise analog signal acquisition combined with low-power digital processing. The integrated DC-DC converter makes it suitable for applications where supply voltage varies significantly. Consider the 12-bit ADC resolution and available capture/compare modules for timing-critical control loops.

Part Context

This device belongs to the C8051F9xx family of mixed-signal microcontrollers. It shares architectural similarities with the C8051F90x series but distinguishes itself through higher Flash capacity and enhanced analog features like the 12-bit ADC. The family emphasizes integration to reduce external component count in compact embedded systems.

Replacement Considerations

Public confirmed substitute part numbers: None identified.