24LC1026T-E/SM

Memory IC Overview

The Microchip Technology 24LC1026T-E/SM 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. The automotive-grade version supports temperatures from -40°C to +125°C.

Memory IC Feature Summary

• Supports cascading up to four devices on the same bus using configurable chip select pins A1 and A2.
• Includes hardware write protection that inhibits all write operations when the WP pin is tied high.
• Features output slope control designed to eliminate ground bounce during switching.

Memory IC Applications

• Personal communications systems requiring non-volatile data storage
• Data acquisition applications needing low-power memory
• Industrial control systems utilizing I²C communication protocols

Memory IC Procurement Notes

Verify the specific suffix 'E' confirms the automotive temperature rating (-40°C to +125°C) and the 'T' indicates tape-and-reel packaging. Confirm the voltage range matches the application requirements, as this variant requires a minimum of 2.5V. Ensure the design accounts for the 128-byte page boundary limitations during write operations to prevent data overwrite errors.

Memory IC Selection Notes

Select this component when system architecture requires expanding memory capacity beyond single-device limits by connecting multiple units to a shared I²C bus. It is suitable for designs demanding robust noise immunity through Schmitt trigger inputs. Consider the page write buffer size when optimizing software for maximum throughput versus byte-write precision.

Memory IC Part Context

This part belongs to the 24XX1026 family, which also includes the 24AA1026 and 24FC1026 variants. These devices share identical functional specifications but differ in operating voltage ranges and maximum clock frequencies. The 24LC1026 specifically targets applications requiring operation between 2.5V and 5.5V with standard I²C speeds.

Memory IC FAQ

How does the block select bit B0 affect memory access?

The block select bit B0 acts as address bit A16, allowing access to either of the two 512K-bit segments within the 1Mbit array. Sequential reads are limited to these 512K boundaries.

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

If a page write attempts to cross a physical page boundary, the data wraps around to the beginning of the current page, overwriting previously stored data instead of continuing to the next page.