C8051F975-A-GM

Overview

The C8051F975-A-GM is an 8-bit microcontroller from Silicon Labs, based on the 8051 core architecture. It operates at a maximum clock frequency of 25 MHz and features 16 kB of in-system programmable Flash memory alongside 4 kB of RAM. The device includes a 10-bit analog-to-digital converter with 19 channels and provides 19 general-purpose I/O pins. It supports communication via I2C, SPI, and UART interfaces. Operating within a voltage range of 1.8 V to 3.6 V, it is housed in a QFN-24 package and functions across a temperature range of -40°C to +85°C.

Feature Summary

• Integrates capacitive sensing capabilities for touch interface applications
• Includes a multi-channel 10-bit ADC for analog signal acquisition
• Features an on-chip USB 2.0 function controller with integrated transceiver

Applications

• Capacitive touch sensor controllers
• USB-enabled embedded systems
• Low-power data acquisition devices

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for specific revision markings on the package. Review official datasheets for any errata updates or design-in notes relevant to the A-GM suffix. Ensure supply chain sources provide valid traceability documentation.

Selection Notes

Select this MCU for designs requiring integrated capacitive touch sensing combined with USB connectivity. Evaluate the 10-bit ADC resolution against application signal requirements. Consider the 25 MHz processing speed for real-time control loops. Verify that the QFN-24 package dimensions fit the target PCB layout constraints.

Part Context

This component belongs to the C8051F97x series of 8-bit MCUs by Silicon Labs. These devices are designed for applications needing mixed-signal processing with low power consumption. The series integrates standard 8051 peripherals with specialized analog front ends and digital communication interfaces suitable for consumer and industrial electronics.

Replacement Considerations

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