24CS256T-E/SN

Memory IC Overview

The Microchip Technology 24CS256T-E/SN is a 256-Kbit (32K x 8) serial EEPROM utilizing an I²C interface with High-Speed mode support up to 3.4 MHz. It operates within a voltage range of 1.7V to 5.5V and supports extended industrial temperatures from -40°C to +125°C. The device features a built-in Security Register containing a factory-programmed 128-bit serial number and user-lockable ID pages, alongside Error Correction Code logic for data integrity.

Memory IC Feature Summary

• Integrated Security Register providing a unique 128-bit serial number and lockable identification storage
• Built-in Error Correction Code logic capable of correcting single-bit errors during read operations
• Versatile write protection options including hardware WP pin control and enhanced software zone locking
• High-speed I²C communication supporting standard modes up to 1 MHz and High-Speed mode at 3.4 MHz

Memory IC Applications

• Automotive systems requiring AEC-Q100 qualified nonvolatile memory
• Industrial equipment needing reliable data logging and configuration storage
• Consumer electronics requiring product serialization and secure data retention

Memory IC Procurement Notes

Verify the specific suffix 'E' confirms the Extended temperature rating (-40°C to +125°C) rather than Industrial grade. Confirm the 'SN' designation corresponds to the 8-lead SOIC package type. Ensure the 'T' indicates tape-and-reel packaging if automated assembly is required. Cross-reference the datasheet revision to confirm current ECC and security register behaviors.

Memory IC Selection Notes

Select this component when high-speed data throughput is necessary via the 3.4 MHz I²C capability. Choose this part over legacy equivalents like the 24LC256 if built-in error correction and unique device serialization are required. Ensure the system voltage remains within the 1.7V to 5.5V operational range to maintain specified performance levels.

Memory IC Part Context

This device belongs to the 24CS series of serial EEPROMs designed for applications demanding enhanced reliability and security. It maintains backward compatibility with standard I²C protocols while adding advanced features such as ECC and hardware-level write protection. The 24CS256 serves as a robust storage solution for critical data in environments where data integrity and device identification are paramount.

Memory IC Replacement Considerations

The 24CS256-E/SN is a direct functional substitute for the 24CS256T-E/SN, differing primarily in bulk packaging rather than electrical characteristics or functionality.