25AA1024-I/S16K

Memory IC Overview

The Microchip Technology 25AA1024-I/S16K is a 1-Mbit (131,072-byte) 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 at higher voltages. The device features a 256-byte page size with self-timed write cycles completing in 6 ms maximum. It includes sector-level write protection for 32K-byte segments and offers high reliability with over 1 million erase/write cycles and data retention exceeding 200 years.

Memory IC Feature Summary

• Supports byte and page-level write operations without requiring prior sector or page erasure.
• Includes hardware write-protect functionality via the WP pin and software block protection bits.
• Features a HOLD input to pause serial communication without resetting the sequence.

Memory IC Applications

• Data logging in industrial control systems
• Configuration storage for microcontroller-based devices
• Parameter storage in automotive electronics

Memory IC Procurement Notes

Verify that the ordering suffix matches the required package type, as the base part number covers multiple packages. Confirm the temperature grade corresponds to the specific application environment requirements. Ensure the voltage range aligns with the system power supply specifications before finalizing procurement.

Memory IC Selection Notes

Select this component when a 1-Mbit capacity is required with SPI interface compatibility. Consider the 1.8V minimum operating voltage for low-power applications. Verify that the SOIJ package fits the board layout constraints. Check if sector protection meets the security requirements for the stored data.

Memory IC Part Context

This part belongs to the 25AA1024 series of 1-Mbit SPI Serial EEPROMs manufactured by Microchip Technology. The series provides nonvolatile memory solutions with varying package options and temperature ranges. It is designed for applications requiring reliable data storage with standard serial peripheral interface connectivity.

Memory IC Replacement Considerations

Check for other suffixes such as /P or /MF if different packaging like PDIP or DFN is needed. Verify equivalent parts from other manufacturers only if they match the exact voltage, speed, and pinout specifications.

Memory IC FAQ

Does the 25AA1024 require an erase cycle before writing new data?

No, the device supports byte and page writes without requiring prior erase cycles. However, page erase instructions are available if needed.

How is the HOLD function utilized during operation?

The HOLD pin allows the host to pause serial communication mid-sequence without losing data or resetting the address pointer. It must be held high when not in use.