24LC256T-E/MF

Memory IC Overview

The Microchip Technology 24LC256T-E/MF is a 32K x 8 (256-Kbit) Serial Electrically Erasable PROM (EEPROM). It operates with a single supply voltage ranging from 2.5V to 5.5V and supports a maximum clock frequency of 400 kHz via a Two-Wire Serial Interface compatible with I2C. The device features Schmitt trigger inputs for noise suppression, hardware write-protect capability, and output slope control to eliminate ground bounce. It offers data retention exceeding 200 years and endurance of over one million erase/write cycles. The component is housed in an 8-Lead DFN package and is rated for extended temperature operation from -40°C to +125°C.

Memory IC Feature Summary

• Supports bidirectional two-wire serial communication protocol compatible with I2C standards.
• Includes hardware write-protect functionality controlled by the WP pin to secure memory arrays.
• Features internal address pointers enabling current, random, and sequential read operations.
• Provides high noise immunity through Schmitt trigger inputs on all communication pins.

Memory IC Applications

• Data acquisition systems requiring non-volatile storage
• Personal communications devices needing low-power memory
• Industrial control applications with extended temperature requirements

Memory IC Procurement Notes

Verify that the ordering suffix 'MF' corresponds specifically to the 8-Lead DFN package type as defined in the manufacturer's documentation. Confirm that the 'E' suffix indicates the Extended temperature range (-40°C to +125°C) rather than the Industrial range. Ensure compatibility with the required 2.5V minimum operating voltage before integration into the design.

Memory IC Selection Notes

Select this component when an I2C-compatible EEPROM with extended temperature capabilities is required. The 24LC256 series is distinct from the 24AA256 due to its higher minimum operating voltage of 2.5V compared to 1.7V. Consider the page write buffer size and bus addressing limitations if multiple devices are placed on the same serial interface.

Memory IC Part Context

This part belongs to the 24XX256 family of serial EEPROMs manufactured by Microchip Technology. The family includes variants such as the 24AA256 and 24FC256, which share similar functional architectures but differ in operating voltage ranges and maximum clock frequencies. The 24LC256 variant is optimized for applications requiring stable operation at standard logic levels.

Memory IC Replacement Considerations

Direct substitutes within the same package and electrical specifications include other 24LC256 variants with different temperature grades or packaging options, provided the interface and voltage requirements remain consistent.