25AA1024T-I/SM

Memory IC Overview

The Microchip Technology 25AA1024T-I/SM is a 1-Mbit (128K x 8) serial EEPROM utilizing an SPI-compatible interface. It operates within a supply voltage range of 1.8V to 5.5V and supports clock frequencies up to 20 MHz. The device features a 256-byte page size, 1 million erase/write cycle endurance, and data retention exceeding 200 years. It includes sector write protection, deep power-down mode with 1 µA current consumption, and operates across the industrial temperature range of -40°C to +85°C.

Memory IC Feature Summary

• Supports byte and page-level write operations without requiring prior sector or page erase cycles.
• Includes hardware write-protect pin and software block protection for array security.
• Features a hold pin to suspend serial communication without resetting the sequence.

Memory IC Applications

• Microcontroller system data storage
• Configuration parameter retention
• Calibration value storage

Memory IC Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when sourcing this component. Confirm the 'I' designation matches the required industrial temperature range specifications for your application environment. Ensure the SOIJ package type aligns with your PCB footprint requirements.

Memory IC Selection Notes

Select this part for applications requiring high-density non-volatile storage with flexible erase capabilities. Consider the 256-byte page size for efficient data management. Evaluate the low standby current if battery operation is a priority. Verify compatibility with the host microcontroller's SPI voltage levels.

Memory IC Part Context

This component belongs to the 25AA1024 family of 1-Mbit serial EEPROMs from Microchip Technology. It shares functional similarities with other devices in the series but differs in package options and specific electrical characteristics defined by its suffixes.

Memory IC Replacement Considerations

Cross-reference with 25LC1024 variants for similar SPI EEPROM functionality. Verify voltage ranges and package dimensions before substitution.

Memory IC FAQ

Does the 25AA1024 require an erase cycle before writing?

No, the device supports byte and page writes without requiring prior erase cycles.

How is the HOLD function utilized?

The HOLD pin pauses serial communication without resetting the address pointer, allowing the host to service interrupts.