C8051F975-A-GMR

Overview

The C8051F975-A-GMR is an 8-bit microcontroller from the Silicon Labs C8051F97x series, featuring an 8051 core with a maximum clock frequency of 25 MHz. It integrates 16 kB of flash program memory and 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. Communication interfaces include I2C, SPI, and UART. It operates within a supply voltage range of 1.8 V to 3.6 V and supports an industrial temperature range of -40°C to +85°C. The component is housed in a QFN-24 package.

Feature Summary

• Integrates capacitive sensing capabilities for touch interface applications
• Features a high-speed 8051-compatible core operating up to 25 MHz
• Includes multiple serial communication peripherals including I2C, SPI, and UART

Applications

• Battery-powered portable devices requiring low power consumption
• Industrial control systems utilizing capacitive sensing inputs
• Embedded sensor nodes with analog signal acquisition needs

Procurement Notes

Verify the specific suffix 'A' against current manufacturer documentation, as product status may have changed. Confirm availability through authorized distributors, noting that this specific part number has been identified as obsolete or end-of-life in public records. Ensure compliance with RoHS directives and check for any pending production change notices affecting assembly or labeling before finalizing procurement plans.

Selection Notes

Select this component when a compact 8-bit MCU with integrated capacitive sensing is required. Compare pin counts and memory sizes against alternatives like the C8051F930 if higher performance is needed. Verify that the 1.8V to 3.6V supply range aligns with the system power architecture. Consider the QFN-24 package constraints for PCB layout and thermal management during the design phase.

Part Context

This microcontroller belongs to the C8051F97x family, which is designed for cost-sensitive applications requiring mixed-signal capabilities. The series emphasizes low power operation and integrated peripherals to reduce external component count. It shares architectural similarities with other C8051F variants but distinguishes itself through specific peripheral combinations tailored for sensor interfacing.

Replacement Considerations

Public records indicate this part number is obsolete. Consult Silicon Labs for recommended replacements within the C8051F9xx series or newer EFM8 families. Verify pin compatibility and software migration requirements before substituting with alternative 8-bit MCUs.