24AA025E64-E/SN

Memory IC Overview

The Microchip Technology 24AA025E64-E/SN is a 2 Kbit Electrically Erasable PROM organized as two blocks of 128 x 8-bit memory. It features a 2-wire I²C compatible serial interface with a maximum clock frequency of 400 kHz (100 kHz at VCC < 2.5V). The device operates on a single supply ranging from 1.7V to 5.5V and supports an industrial temperature range of -40°C to +125°C. It includes a pre-programmed, globally unique 64-bit EUI-64 node address stored in the upper half of the array, which is permanently write-protected. The remaining 1,024 bits are available for user data storage.

Memory IC Feature Summary

• Pre-programmed globally unique 64-bit EUI-64 node address for hardware identity
• Low-power CMOS technology with standby current as low as 5 µA
• Schmitt trigger inputs and output slope control for noise suppression
• Self-timed erase/write cycles with page write buffer capability

Memory IC Applications

• IoT device authentication and identification
• Firmware binding and secure boot processes
• Anti-counterfeiting and product traceability systems
• Embedded controllers requiring unique hardware IDs

Memory IC Procurement Notes

Verify that the suffix 'E' corresponds to the Automotive temperature grade (-40°C to +125°C) rather than the Industrial grade. Confirm the 'SN' package designation matches the required 8-lead SOIC footprint. Ensure the specific model number includes the '64' identifier to guarantee the presence of the EUI-64 node address rather than the EUI-48 variant.

Memory IC Selection Notes

Select this component when a unique, factory-burned 64-bit identifier is required for system security or tracking. The automotive temperature rating makes it suitable for harsh environments where standard industrial parts may fail. Consider the 16-byte page size for efficient bulk data writes compared to the 8-byte alternative.

Memory IC Part Context

This part belongs to the 24AA02XEXX family of 2 Kbit serial EEPROMs designed specifically for applications needing permanent hardware identification. Unlike standard EEPROMs, these devices integrate IEEE-compliant node addresses directly into the silicon during manufacturing, eliminating the need for external security modules or software-based UUID generation.

Memory IC Replacement Considerations

24AA025E64-I/SN