24FC256T-I/OT

Memory IC Overview

The Microchip Technology 24FC256T-I/OT is a 32K x 8 (256 Kbit) Serial Electrically Erasable PROM (EEPROM). It operates across a broad voltage range of 1.7V to 5.5V and supports a maximum clock frequency of 1 MHz at VCC ≥ 2.5V, with 400 kHz compatibility at lower voltages. The device utilizes a Two-Wire Serial Interface compatible with I²C protocols. It features a 64-byte page write buffer, hardware write-protect capability via the WP pin, and Schmitt trigger inputs for noise suppression. The component is housed in an 8-ball CSP or 5-lead SOT-23 package.

Memory IC Feature Summary

• Supports high-speed serial data transfer up to 1 MHz under standard operating conditions
• Includes a 64-byte page write buffer to optimize write throughput
• Features hardware write protection controlled by the dedicated WP pin
• Incorporates Schmitt trigger inputs on SDA and SCL lines for enhanced noise immunity

Memory IC Applications

• Personal communications devices requiring low-power non-volatile storage
• Data acquisition systems needing reliable parameter retention
• Embedded controllers utilizing I²C bus architectures

Memory IC Procurement Notes

Verify that the specific ordering suffix matches the required temperature grade and physical package configuration. Confirm that the supply voltage meets the minimum threshold for the desired clock speed. Ensure the application design accounts for the specific pinout differences between available packages.

Memory IC Selection Notes

Select this part when operation below 2.5V is required alongside high-speed 1 MHz communication capabilities. The Industrial temperature range (-40°C to +85°C) suits general-purpose electronics. Consider alternative packages if multiple device addressing on a single bus is necessary, as the SOT-23 variant lacks address pins.

Memory IC Part Context

This component belongs to the 24XX256 family of 256-Kbit I²C Serial EEPROMs. It shares functional similarities with the 24AA256 and 24LC256 but offers distinct electrical characteristics, specifically the ability to operate down to 1.7V while maintaining higher clock speeds compared to other variants in the series.

Memory IC Replacement Considerations

Public confirmed substitute part numbers: 24FC256I/SN, 24FC256I/MF, 24FC256I/ST.