24LC1026T-E/ST

Memory IC Overview

The Microchip Technology 24LC1026T-E/ST is a 1-Mbit (128K x 8) serial electrically erasable PROM featuring an I2C-compatible 2-wire interface. It operates within a voltage range of 2.5V to 5.5V and supports clock frequencies up to 400 kHz. The device includes a 128-byte page write buffer, hardware write-protect capability via the WP pin, and Schmitt trigger inputs for noise suppression. It offers over one million erase/write cycles and data retention exceeding 200 years. Available in an 8-lead SOIC package, it functions across industrial and automotive temperature ranges.

Memory IC Feature Summary

• Supports cascading up to four devices on a single bus using configurable chip select inputs.
• Includes hardware write protection to inhibit array writes when the WP pin is tied high.
• Features output slope control to eliminate ground bounce during switching operations.

Memory IC Applications

• Personal communications systems requiring non-volatile data storage
• Data acquisition modules needing reliable parameter retention
• Industrial control units utilizing low-power memory interfaces

Memory IC Procurement Notes

Verify that the ordering suffix matches the required temperature grade and package type. Confirm the specific revision level against the manufacturer's latest datasheet to ensure compatibility with existing designs. Check for any recent changes in RoHS compliance status or packaging specifications before finalizing procurement orders.

Memory IC Selection Notes

Select this component for applications requiring robust noise immunity and flexible addressing on shared buses. The automotive temperature rating makes it suitable for harsh environments. Ensure the system voltage remains above 2.5V to maintain the specified 400 kHz clock speed. Consider the page write boundary limitations when designing software drivers to prevent data corruption.

Memory IC Part Context

This part belongs to the 24XX1026 family of 1-Mbit Serial EEPROMs from Microchip Technology. It shares functional similarities with the 24AA1026 and 24FC1026 models but differs in operating voltage and maximum clock frequency specifications. The 'E' suffix indicates an extended temperature range suitable for automotive applications.

Memory IC Replacement Considerations

Direct substitutes include the 24LC1026-I/SN for industrial temperature ranges or the 24FC1026 for higher speed requirements. Verify voltage compatibility and package dimensions when swapping between these variants to ensure proper fit and function.

Memory IC FAQ

How does the block select bit affect memory access?

The block select bit acts as address bit A16, allowing access to either of the two 512K-bit segments within the 1-Mbit array.

What happens if a page write crosses a physical page boundary?

The data wraps around to the beginning of the current page, overwriting previously stored data instead of writing to the next page.