24LC256T-I/MS

Memory IC Overview

The Microchip Technology 24LC256T-I/MS is a 256 Kbit (32K x 8) serial EEPROM utilizing an I2C-compatible two-wire interface. It operates within a supply voltage range of 2.5V to 5.5V and supports clock frequencies up to 400 kHz. The device features a 64-byte page write buffer, hardware write protection via the WP pin, and Schmitt trigger inputs for noise suppression. Packaged in an 8-lead MSOP, it offers industrial temperature operation from -40°C to +85°C with data retention exceeding 200 years.

Memory IC Feature Summary

• Supports cascading up to eight devices on the same bus using functional address lines A0, A1, and A2.
• Includes a 64-byte page write buffer to optimize write throughput.
• Features hardware write protection controlled by the WP pin to inhibit array writes.

Memory IC Applications

• Personal communications equipment
• Data acquisition systems
• Low-power embedded memory storage

Memory IC Procurement Notes

Verify that the ordering suffix 'T' corresponds to tape-and-reel packaging rather than tube packaging. Confirm the 'I' suffix indicates the Industrial temperature range (-40°C to +85°C). Ensure the 'MS' package designation matches the required 8-lead MSOP form factor for your PCB layout.

Memory IC Selection Notes

Select this component when a 2.5V minimum supply voltage is acceptable, as opposed to the 1.7V capability of the 24AA256 or 24FC256 variants. Choose the MSOP package for space-constrained surface-mount designs. Verify that the 400 kHz maximum clock speed meets the system's bus timing requirements.

Memory IC Part Context

This part belongs to the 24XX256 family of 256-Kbit Serial Electrically Erasable PROMs. It shares architectural similarities with the 24AA256 and 24FC256 but differs in operating voltage and clock speed specifications. The T suffix denotes reel packaging, while MS specifies the 8-lead Mini Small Outline Package.

Memory IC Replacement Considerations

The 24LC256T-E/MS serves as the extended temperature variant of this component. Other family members include the 24AA256 and 24FC256, though these differ in voltage ranges and maximum clock frequencies.