24CSM01T-E/ST

Memory IC Overview

The Microchip Technology 24CSM01T-E/ST is a 1-Mbit (131,072 x 8) serial EEPROM featuring 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 industrial (-40°C to +85°C) and extended (-40°C to +125°C) temperature ranges. The device includes a 4-Kbit Security register containing a factory-programmed 128-bit serial number and user-lockable ID pages. Built-in ECC logic enhances reliability, while AEC-Q100 automotive qualification ensures robust performance in demanding environments.

Memory IC Feature Summary

• High-speed I²C communication supporting Standard, Fast, Fast Mode Plus, and High-Speed modes up to 3.4 MHz
• Integrated 4-Kbit Security register with globally unique 128-bit serial number and lockable identification page
• Built-in Error Correction Code (ECC) logic for data integrity verification
• Versatile write protection options including hardware WP pin and enhanced software configuration

Memory IC Applications

• Automotive systems requiring AEC-Q100 qualified nonvolatile memory
• Industrial control applications needing high-reliability data storage
• Consumer electronics utilizing secure device identification
• Embedded systems requiring fast I²C data logging

Memory IC Procurement Notes

Verify the specific package suffix 'ST' corresponds to the 8-Lead TSSOP variant as documented in official datasheets. Confirm that the 'E' designation aligns with the extended temperature range requirements (-40°C to +125°C). Ensure compatibility with the intended I²C bus speed, particularly if operating above 1 MHz, which requires specific voltage conditions. Check for any recent Product Change Notifications regarding packaging or material composition updates.

Memory IC Selection Notes

Select this component when high-speed data transfer rates up to 3.4 MHz are required alongside robust security features. The built-in ECC and 128-bit serial number make it suitable for applications prioritizing data integrity and device authentication. Consider the extended temperature range if the operating environment exceeds standard industrial limits. Ensure the system design accommodates the necessary pull-up resistors for the selected I²C clock frequency.

Memory IC Part Context

The 24CSM01 belongs to Microchip's 24CS series of serial EEPROMs, designed for applications requiring enhanced security and reliability. This series integrates unique serial numbers and configurable write protection directly into the memory architecture. The 24CSM01 specifically targets markets demanding high-speed I²C interfaces and automotive-grade durability, distinguishing itself from lower-capacity or non-automotive variants within the broader EEPROM portfolio.

Memory IC Replacement Considerations

Consult official cross-reference guides for verified substitutes. Generic EEPROM replacements may lack the integrated 128-bit serial number, ECC logic, or AEC-Q100 qualification. Verify that any alternative part matches the 1.7V to 5.5V operating voltage and supports the required High-Speed I²C mode if applicable.