24AA1025T-I/SM

Memory IC Overview

The Microchip Technology 24AA1025T-I/SM is a 1-Mbit (128K x 8) serial EEPROM utilizing an I²C-compatible interface. It operates within a supply voltage range of 1.7V to 5.5V and supports clock frequencies up to 400 kHz in the industrial temperature range (-40°C to +85°C). The device features a 128-byte page write buffer, hardware write protection via the WP pin, and high endurance exceeding one million erase/write cycles with data retention over 200 years.

Memory IC Feature Summary

• Supports bidirectional two-wire serial communication compatible with standard I²C protocols
• Includes a 128-byte page write buffer for efficient sequential data storage operations
• Provides hardware-based write protection through the dedicated WP pin input
• Features Schmitt trigger inputs on SDA and SCL lines for enhanced noise suppression

Memory IC Applications

• Data acquisition systems requiring non-volatile parameter storage
• Personal communications devices needing low-power memory solutions
• Embedded controllers storing configuration settings or calibration data
• Industrial control units operating across wide voltage ranges

Memory IC Procurement Notes

Verify that the ordering suffix 'I' corresponds to the Industrial temperature grade (-40°C to +85°C) and 'SM' indicates the SOIJ package variant. Confirm the specific voltage requirements align with the 1.7V to 5.5V operational range specified for the 24AA series. Ensure the application design accounts for the 400 kHz maximum clock frequency limitation at the selected supply voltage.

Memory IC Selection Notes

Select this component when a 1-Mbit capacity is required alongside strict low-power constraints. The 24AA1025 is suitable for applications demanding wide voltage compatibility from 1.7V upwards. Consider the 128-byte page size for write efficiency and verify that the physical layout accommodates the SOIJ package dimensions. Ensure the system bus timing meets the specified setup and hold requirements for reliable I²C communication.

Memory IC Part Context

This part belongs to the 24XX1025 family of serial EEPROMs manufactured by Microchip Technology. It shares functional similarities with the 24LC1025 and 24FC1025 variants, differing primarily in voltage ranges and clock speeds. The 24AA1025 specifically targets industrial environments with its broad voltage support and robust noise immunity features integrated into the CMOS technology.

Memory IC Replacement Considerations

The 24LC1025 serves as a direct functional substitute but requires a minimum supply voltage of 2.5V. The 24FC1025 offers higher speed capabilities up to 1 MHz but also has a minimum voltage requirement of 1.8V. Verify that any replacement part matches the specific package type and temperature rating required for the existing design.