24CSM01-E/SN

Memory IC Overview

The Microchip Technology 24CSM01-E/SN is a 1-Mbit (131,072 x 8 bit) 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 temperature ranges (-40°C to +85°C). The device includes built-in ECC logic for data reliability, a preprogrammed 128-bit serial number, and enhanced software write protection capabilities.

Memory IC Feature Summary

• Built-in Error Correction Code (ECC) logic capable of correcting single-bit errors within four-byte readouts.
• Preprogrammed globally unique 128-bit serial number stored in the Security register.
• Enhanced software write protection allowing configuration of independent memory zones via the Configuration register.
• High-speed I²C communication supporting Standard, Fast, Fast Mode Plus, and High-Speed modes.

Memory IC Applications

• Consumer electronics requiring reliable nonvolatile storage
• Industrial control systems needing high-reliability memory
• Automotive applications qualified under AEC-Q100 standards

Memory IC Procurement Notes

Verify that the ordering suffix 'SN' corresponds to the 8-lead SOIC package as specified in the datasheet. Confirm the 'E' suffix indicates Extended temperature rating (-40°C to +125°C). Ensure compatibility with the host system's I²C voltage levels and pull-up requirements for the selected clock frequency.

Memory IC Selection Notes

Select this component when a 1-Mbit capacity is required alongside high-speed data transfer rates up to 3.4 MHz. The extended temperature range makes it suitable for harsh environments. Consider the integrated ECC and security features if data integrity and device identification are critical to the application design.

Memory IC Part Context

The 24CSM01 series provides 1-Mbit serial EEPROM storage optimized for consumer, industrial, and automotive markets. It utilizes an I²C interface and offers advanced security features including a unique serial number and configurable write protection zones. The device is designed for applications demanding high reliability and long data retention.

Memory IC Replacement Considerations

Check for other 24CSM01 variants with different packages or temperature ratings. Verify pinout compatibility if substituting with similar I²C EEPROMs from other manufacturers, ensuring voltage and speed specifications match.

Memory IC FAQ

What is the function of the built-in ECC logic?

The ECC logic can correct up to one incorrectly read bit within a four-byte readout, enhancing data reliability.

How is the 128-bit serial number accessed?

The 128-bit serial number is factory-programmed into the first 16 bytes of the Security register and is accessible via standard I²C read commands.