25LC040AT-E/MC

Overview

The Microchip Technology 25LC040AT-E/MC is a 4 Kbit (512 x 8-bit) Serial Electrically Erasable Programmable Read-Only Memory (EEPROM). It operates via a SPI-compatible serial bus with a maximum clock frequency of 10 MHz. The device supports a supply voltage range of 2.5 V to 5.5 V and functions within an extended temperature range of -40°C to +125°C. It utilizes an 8-lead DFN package.

Feature Summary

• Supports high-speed SPI communication up to 10 MHz
• Includes hardware write protection via the WP pin
• Features self-timed erase and write cycles

Applications

• Microcontroller data storage
• Configuration memory systems
• Parameter storage in industrial equipment

Procurement Notes

Verify the specific suffix 'MC' corresponds to the 8-lead DFN package and automotive grade (-E) requirements. Confirm RoHS compliance status for the manufacturing lot. Ensure the ordering quantity matches the tape and reel specifications provided by the distributor.

Selection Notes

Select this component when an extended operating temperature range up to 125°C is required. The 2.5 V minimum supply voltage allows compatibility with lower voltage logic levels compared to standard 5 V EEPROMs. Verify that the 10 MHz clock speed meets the system's timing constraints.

Part Context

This part belongs to the 25LC040A family, which includes variants with different voltage ranges and packages. The 'T' indicates tape and reel packaging, while 'MC' specifies the 8-lead DFN form factor. The 'E' suffix denotes the automotive temperature grade.

Replacement Considerations

Direct substitutes include other 25LC040A variants with compatible pinouts and electrical characteristics. Verify package dimensions and thermal performance when replacing with SOIC or TSSOP versions.