C8051F972-A-GM

Overview

The C8051F972-A-GM is an 8-bit microcontroller from Silicon Labs, based on the CIP-51 architecture. It features a 25 MHz operating frequency, 32 kB of Flash program memory, and 8 kB of RAM. The device includes a 10-bit ADC with 19 channels and supports low-power capacitive sensing. It operates within a supply voltage range of 1.8 V to 3.6 V and is housed in a 24-pin QFN (4x4) package.

Feature Summary

• Integrates a high-speed 8-bit CIP-51 processor core for efficient code execution.
• Includes extensive analog peripherals with multiple 10-bit ADC channels.
• Supports low-power capacitive sensing applications directly through hardware.
• Features internal oscillator options for simplified system design.

Applications

• Battery-powered sensor nodes requiring low power consumption
• Industrial control systems with analog signal processing needs
• Consumer electronics utilizing capacitive touch interfaces

Procurement Notes

Verify the specific suffix 'GM' indicates the tube packaging variant when ordering. Confirm the revision level matches project requirements, as datasheet version 1.1 is referenced for this family. Ensure compatibility with existing PCB footprints for the 24-QFN package before finalizing procurement decisions.

Selection Notes

Select this component for designs requiring a balance of processing speed and analog integration in a compact form factor. Consider the 25 MHz clock speed sufficient for most real-time control tasks. Evaluate the 19-channel ADC capability against input requirements to ensure adequate resolution and multiplexing options are available without external components.

Part Context

This part belongs to the C8051F9xx series of 8-bit MCUs, which are designed for cost-sensitive applications needing robust analog performance. The series emphasizes low power operation and integrated peripherals to reduce bill-of-materials count. It serves as a drop-in replacement for legacy 8051-based designs while offering enhanced digital and analog capabilities.

Replacement Considerations

Check for C8051F973-A-GM if additional memory or I/O pins are required. Verify pinout compatibility with C8051F972-A-GMR if reel packaging is preferred instead of tubes. Review datasheet errata for any silicon revisions affecting peripheral behavior.