24CS256T-I/SM

Memory IC Overview

The Microchip Technology 24CS256T-I/SM is a 256-Kbit (32K x 8) serial EEPROM featuring a high-speed I²C interface with support for 3.4 MHz operation. It operates across a voltage range of 1.7V to 5.5V and includes a built-in Security Register containing a factory-programmed 128-bit serial number and a user-programmable ID page. The device supports up to eight devices on the same bus, offers enhanced software write protection via a Configuration register, and utilizes Error Correction Code (ECC) logic for data reliability.

Memory IC Feature Summary

• High-Speed I²C Interface supporting 3.4 MHz mode
• Integrated Security Register with unique 128-bit serial number
• Built-in Error Correction Code (ECC) Logic
• Enhanced Software Write Protection capabilities

Memory IC Applications

• Consumer electronics requiring reliable nonvolatile memory storage
• Industrial applications demanding dependable data retention
• Automotive systems utilizing AEC-Q100 qualified components

Memory IC Procurement Notes

Verify that the ordering suffix 'I' corresponds to the Industrial temperature range (-40°C to +85°C). Confirm the package designation matches the required SOIJ-8 form factor. Ensure the specific tape-and-reel quantity aligns with manufacturing requirements. Cross-reference the datasheet revision to confirm feature availability.

Memory IC Selection Notes

Select this component when high-speed data transfer rates are necessary alongside robust security features. The inclusion of ECC logic makes it suitable for environments where data integrity is critical. Consider the enhanced software write protection if hardware pins cannot be utilized for array locking. Verify compatibility with existing I²C bus architectures.

Memory IC Part Context

This part belongs to the 24CS256 series, which distinguishes itself from legacy counterparts like the 24AA256 through added security registers and higher clock speeds. The 'T' indicates tape-and-reel packaging, while 'I' denotes the industrial temperature grade. The 'SM' specifies the SOIJ-8 package type.

Memory IC Replacement Considerations

The datasheet notes backward compatibility with 24AA256, 24LC256, and 24FC256 devices regarding basic I²C operations. However, the presence of the Security Register and Configuration Register requires specific command sequences not present in older parts. AT24C256C is also listed as compatible.