24LC256-E/P

Memory IC Overview

The Microchip Technology 24LC256-E/P 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 an I²C compatible two-wire serial interface. The device features a 64-byte page write buffer, hardware write-protect capability, and Schmitt trigger inputs for noise suppression. It is housed in an 8-pin PDIP package and is rated for an extended temperature range of -40°C to +125°C.

Memory IC Feature Summary

• Supports bidirectional two-wire serial data transmission protocol
• Includes hardware write-protect functionality via the WP pin
• Features Schmitt trigger inputs for improved noise spike suppression
• Capable of cascading up to eight devices on the same bus

Memory IC Applications

• Personal communications systems
• Data acquisition applications
• Advanced low-power electronic designs

Memory IC Procurement Notes

Verify that the ordering suffix 'E' corresponds to the Extended temperature range (-40°C to +125°C) and 'P' indicates the 8-pin PDIP package. Confirm the specific datasheet revision matches the required electrical characteristics. Ensure the application design accounts for the 2.5V minimum operating voltage specified for the 24LC256 series.

Memory IC Selection Notes

Select this component when a non-volatile memory solution requires I²C connectivity and robust operation across wide temperature variations. The 24LC256-E/P is suitable for designs needing hardware-level write protection and high endurance. Consider the PDIP package constraints if surface-mount technology is not utilized in the target PCB layout.

Memory IC Part Context

This part belongs to the 24XX256 family, which includes the 24AA256 and 24FC256 variants. While sharing similar architecture, the 24LC256 is distinguished by its 2.5V minimum operating voltage, whereas other family members support lower voltages down to 1.7V. The 'E' suffix denotes the extended industrial temperature grade.

Memory IC Replacement Considerations

Direct substitutes within the same package include the 24LC256-I/P for industrial temperature ranges. Other 24LC256 variants like 24LC256T-E/MS offer different packaging but share core specifications.