24CS256-E/MS

Memory IC Overview

The Microchip Technology 24CS256-E/MS is a 256-Kbit (32,768 x 8-bit) serial EEPROM utilizing 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 features a 1-Kbit Security Register containing a factory-programmed 128-bit serial number and a user-programmable ID page. The device includes built-in Error Correction Code (ECC) logic for data reliability, enhanced software write protection, and AEC-Q100 automotive qualification.

Memory IC Feature Summary

• Integrated 128-bit globally unique serial number within the Security Register
• Built-in Error Correction Code (ECC) logic for increased data reliability
• Enhanced software write protection allowing independent zone locking
• AEC-Q100 qualified for automotive applications

Memory IC Applications

• Automotive systems requiring reliable nonvolatile memory storage
• Industrial applications needing high-speed data logging
• Consumer electronics requiring product serialization
• Systems demanding hardware-level data security

Memory IC Procurement Notes

Verify that the suffix 'E' confirms the Extended temperature range (-40°C to +125°C) and 'MS' specifies the 8-lead MSOP package. Confirm the specific revision level matches your design requirements. Ensure the ordering code aligns exactly with the required voltage and speed specifications before finalizing procurement.

Memory IC Selection Notes

Select this component when automotive qualification (AEC-Q100) and extended temperature operation are mandatory. The 24CS256-E/MS provides higher speed capabilities compared to legacy counterparts. Consider the integrated ECC and security register if data integrity and device identification are critical system requirements.

Memory IC Part Context

This part belongs to the 24CS256 family of 256-Kbit serial EEPROMs. It is backward compatible with 24AA256, 24LC256, and AT24C256C devices. The 'E' designation indicates extended temperature performance, while 'MS' denotes the surface-mount MSOP package type.

Memory IC Replacement Considerations

The datasheet explicitly lists backward compatibility with 24AA256, 24LC256, and AT24C256C. Verify pinout and voltage compatibility when substituting these legacy parts.