25C040T-I/SN

Memory IC Overview

The Microchip Technology 25C040T-I/SN is a 4 Kbit (512 x 8) Serial Electrically Erasable PROM. It features an SPI-compatible serial bus interface with a maximum clock frequency of 3 MHz and operates within a supply voltage range of 4.5V to 5.5V. The device supports industrial temperature ranges from -40°C to +85°C and is housed in an 8-lead Plastic Small Outline (SOIC) package.

Memory IC Feature Summary

• Serial Peripheral Interface (SPI) compatible communication
• Hardware write protection via the WP pin
• Self-timed erase and write cycles
• Block write protection for array segments

Memory IC Applications

• Microcontroller data storage
• Configuration parameter retention
• Calibration data logging

Memory IC Procurement Notes

Verify that the ordering suffix 'T' corresponds to tape and reel packaging, as standard variants may use tubes. Confirm the 'I' suffix indicates the specified industrial temperature range. Ensure the 'SN' designation matches the required SOIC package dimensions for PCB layout compatibility.

Memory IC Selection Notes

Select this component when a 5.0V nominal supply voltage is required. The 3 MHz clock speed offers higher throughput compared to lower-voltage counterparts. Verify that the system architecture supports the specific SPI mode and timing requirements defined in the datasheet electrical characteristics.

Memory IC Part Context

This part belongs to the 25XX040 family of 4 Kbit serial EEPROMs. It shares architectural similarities with the 25AA040 and 25LC040 but is distinguished by its higher minimum operating voltage requirement. The 'T' suffix specifically denotes tape and reel packaging for automated assembly processes.

Memory IC Replacement Considerations

Direct substitutes include other 25C040 variants with different packaging options such as 25C040-I/P or 25C040-I/ST.