24CS256T-I/ST

Memory IC Overview

The Microchip Technology 24CS256T-I/ST is a 256-Kbit (32K x 8) serial EEPROM featuring an I²C interface with High-Speed mode support up to 3.4 MHz. It operates across a voltage range of 1.7V to 5.5V and supports industrial temperature ranges from -40°C to +85°C. The device includes a Security Register with a preprogrammed 128-bit serial number, built-in ECC logic for data reliability, and enhanced software write protection capabilities.

Memory IC Feature Summary

• High-speed I²C communication supporting standard modes and 3.4 MHz High-Speed operation
• Integrated Security Register containing a unique factory-programmed 128-bit serial number
• Built-in Error Correction Code (ECC) logic to correct single-bit read errors
• Versatile write protection options including hardware WP pin control and lockable software zones

Memory IC Applications

• Consumer electronics requiring reliable nonvolatile memory storage
• Industrial applications demanding high reliability and noise suppression
• Automotive systems utilizing AEC-Q100 qualified components

Memory IC Procurement Notes

Verify the specific suffix 'I/ST' confirms the Industrial temperature grade (-40°C to +85°C) and TSSOP-8 package type. Ensure the order quantity aligns with tape-and-reel packaging requirements. Confirm that the application design accommodates the 3.4 MHz High-Speed mode electrical characteristics if utilized.

Memory IC Selection Notes

Select this component when a 256-Kbit capacity is required alongside a 3.4 MHz interface speed. It is suitable for designs needing unique device identification via the integrated serial number. Consider this part for automotive or industrial environments where extended temperature stability and robust write protection are necessary.

Memory IC Part Context

This device belongs to the 24CS256 series of Serial EEPROMs manufactured by Microchip Technology. It is designed as a backward-compatible replacement for legacy devices such as the 24AA256, 24LC256, and AT24C256C while offering advanced features like High-Speed I²C and enhanced security registers.

Memory IC Replacement Considerations

The datasheet explicitly states backward compatibility with the 24AA256, 24LC256, 24FC256, and AT24C256C serial EEPROMs.