24AA1025-I/SN

Memory IC Overview

The Microchip Technology 24AA1025-I/SN is a 128K x 8 (1024K bit) Serial Electrically Erasable PROM. It operates across a voltage range of 1.7V to 5.5V with a maximum clock frequency of 400 kHz. The device supports I2C-compatible 2-wire serial interface and features a 128-byte page write buffer. It includes hardware write-protect functionality, Schmitt trigger inputs for noise suppression, and output slope control. The component is available in an 8-lead SOIC package and is rated for industrial temperature ranges from -40°C to +85°C.

Memory IC Feature Summary

• Supports bidirectional 2-wire serial data transmission protocol compatible with I2C bus standards
• Features hardware write-protect capability via the WP pin to inhibit array writes when tied high
• Includes Schmitt trigger inputs on SDA and SCL pins to provide improved noise spike suppression
• Utilizes low-power CMOS technology to minimize read and standby current consumption

Memory IC Applications

• Personal communications devices requiring non-volatile data storage
• Data acquisition systems needing reliable parameter retention
• Embedded controllers utilizing cascaded memory expansion on shared buses

Memory IC Procurement Notes

Verify that the ordering suffix matches the required package type and temperature grade. Confirm the specific voltage and speed variants align with system requirements. Ensure compliance with environmental directives such as RoHS if applicable. Check datasheet revisions for any updates to electrical characteristics or pin configurations before finalizing procurement specifications.

Memory IC Selection Notes

Select this component for applications requiring broad voltage operation down to 1.7V. Choose this part over higher-speed variants when 400 kHz bus speeds are sufficient. Consider the 128-byte page buffer for efficient bulk data writing operations. Verify that the 8-pin SOIC package fits the available PCB footprint constraints.

Memory IC Part Context

This device belongs to the 24XX1025 family of serial EEPROMs manufactured by Microchip Technology. It shares functional similarities with the 24LC1025 and 24FC1025 models but differs in operating voltage and clock frequency specifications. The family utilizes a common block diagram and bus protocol structure while offering distinct performance profiles for various industrial and commercial environments.

Memory IC Replacement Considerations

The 24LC1025 serves as a direct functional replacement within the same family, though it requires a minimum supply voltage of 2.5V compared to the 1.7V minimum of the 24AA1025. Ensure voltage headroom meets the replacement's requirements.