24AA1025-I/SM

Memory IC Overview

The Microchip Technology 24AA1025-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 hardware write-protect functionality controlled by the dedicated WP pin
• Features Schmitt trigger inputs for enhanced noise suppression on data lines

Memory IC Applications

• Personal communications devices requiring non-volatile storage
• Data acquisition systems needing reliable parameter retention
• Embedded controllers managing configuration settings

Memory IC Procurement Notes

Verify that the specific ordering suffix matches the required package type and temperature grade. Confirm the voltage operating range aligns with the system design, as other variants in this family may have different minimum voltage thresholds. Ensure the I²C bus pull-up resistors are selected appropriately for the target clock frequency to maintain signal integrity.

Memory IC Selection Notes

Select this component when a wide voltage operation down to 1.7V is required alongside standard I²C compatibility. It is suitable for applications demanding high endurance and long-term data retention without complex memory management. Consider alternative models if higher clock speeds or SPI interfaces are necessary for the specific application constraints.

Memory IC Part Context

This part belongs to the 24XX1025 family of serial EEPROMs from Microchip Technology. It shares architectural similarities with the 24LC1025 and 24FC1025 but differs in electrical specifications such as minimum operating voltage and maximum supported clock frequency. The 'I' suffix denotes the industrial temperature rating, while 'SM' indicates the surface-mount SOIJ package.

Memory IC Replacement Considerations

Direct functional substitutes include the 24LC1025 and 24FC1025, provided their respective voltage and speed requirements match the system design. Verify that any replacement maintains the same 8-pin SOIJ footprint and I²C addressing scheme.