24LC256-I/P

Memory IC Overview

The Microchip Technology 24LC256-I/P is a 256 Kbit (32K x 8) serial electrically erasable programmable read-only memory (EEPROM). It operates on a single supply voltage ranging from 2.5V to 5.5V and utilizes an I²C compatible two-wire serial interface with a maximum clock frequency of 400 kHz. The device features a 900 ns access time, a 64-byte page write buffer, and a maximum page write time of 5 ms. Designed for industrial applications, it supports a temperature range of -40°C to +85°C and is housed in an 8-pin PDIP package.

Memory IC Feature Summary

• Supports cascading up to eight devices on the same bus using hardware address inputs.
• Includes Schmitt trigger inputs for noise suppression and output slope control to eliminate ground bounce.
• Features hardware write-protect capability via the WP pin to inhibit write operations.
• Provides high reliability with over one million erase/write cycles and data retention exceeding 200 years.

Memory IC Applications

• Personal communications systems requiring non-volatile data storage
• Data acquisition systems for logging sensor information
• Industrial control environments needing reliable parameter storage

Memory IC Procurement Notes

Verify that the specific ordering suffix corresponds to the required package type and temperature grade. Confirm that the voltage requirements align with the 2.5V minimum specification for the LC variant. Ensure compatibility with the host system's I²C pull-up resistor values for the target clock speed. Check for any recent product change notifications regarding packaging or assembly sites.

Memory IC Selection Notes

Select this component when a 256 Kbit capacity is required with a standard I²C interface. Choose this part over the AA or FC variants if the application strictly requires a 2.5V minimum operating voltage. Consider the PDIP package only if through-hole mounting is necessary for the design constraints. Verify that the 400 kHz clock speed meets the system timing requirements.

Memory IC Part Context

This device belongs to the 24XX256 family of serial EEPROMs manufactured by Microchip Technology. It shares functional similarities with the 24AA256 and 24FC256 but differs in operating voltage and maximum clock frequency specifications. The family is designed for low-power applications and offers various package options including SOIC, MSOP, and TSSOP.

Memory IC Replacement Considerations

• 24AA256-I/P
• 24FC256-I/P