24LC256-I/MS

Memory IC Overview

The Microchip Technology 24LC256-I/MS is a 32K x 8 (256 Kbit) Serial Electrically Erasable PROM (EEPROM). It operates within a voltage range of 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 a 64-byte page write buffer, hardware write-protect capability, and Schmitt trigger inputs for noise suppression. It is housed in an 8-lead MSOP package and is rated for industrial temperature ranges from -40°C to +85°C.

Memory IC Feature Summary

• Supports bidirectional two-wire serial data transmission protocol compatible with I²C bus standards.
• Includes a 64-byte page write buffer to facilitate efficient sequential data writing operations.
• Features hardware write-protect functionality controlled by the WP pin to secure memory arrays.

Memory IC Applications

• Personal communications devices requiring non-volatile data storage
• Data acquisition systems needing reliable parameter retention
• Industrial control applications utilizing I²C communication buses

Memory IC Procurement Notes

Verify that the ordering suffix matches the specific package type and temperature grade required for your design. Confirm that the voltage supply aligns with the 2.5V minimum requirement for the LC series. Ensure compatibility with the I²C bus speed limits defined in the datasheet specifications before finalizing procurement orders.

Memory IC Selection Notes

Select this component when a 256 Kbit EEPROM with I²C interface is needed for low-power applications. The MSOP package is suitable for space-constrained surface mount designs. Consider the 2.5V minimum operating voltage constraint compared to other variants in the family that support lower voltages.

Memory IC Part Context

This part 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 ranges and maximum clock frequencies. The 'I' designation indicates the industrial temperature range availability.

Memory IC Replacement Considerations

24LC256-I/SN

Memory IC FAQ

How many devices can be connected to the same bus using the 24LC256-I/MS?

Only two 24LC256-I/MS devices can be connected to the same bus because the A0 and A1 chip select pins are not connected in the MSOP package.

What is the function of the WP pin on the 24LC256-I/MS?

The WP pin provides hardware write protection. When tied to VCC, write operations are inhibited, while tying it to VSS enables write operations.