24AA02E64-I/SN

Memory IC Overview

The Microchip Technology 24AA02E64-I/SN is a 2 Kbit Electrically Erasable PROM organized as two blocks of 128 x 8-bit memory. It features a 2-wire serial I2C interface with a maximum clock frequency of 400 kHz (100 kHz below 2.5V). Operating on a single supply from 1.7V to 5.5V, it includes a pre-programmed globally unique 64-bit EUI-64 node address in the upper half of the array, which is permanently write-protected. The device supports page writes of up to eight bytes and offers data retention exceeding 200 years.

Memory IC Feature Summary

• Factory-programmed globally unique 64-bit EUI-64 node address stored in the upper half of the memory array
• Single-supply operation down to 1.7V with low-power CMOS technology for minimal active and standby current consumption
• I2C compatible 2-wire serial interface with Schmitt trigger inputs for noise suppression and output slope control
• High reliability specifications including over one million erase/write cycles and more than 200 years of data retention

Memory IC Applications

• Network node identification in systems requiring IEEE EUI-64 standards
• Low-voltage embedded systems needing non-volatile storage with unique hardware identifiers
• Industrial applications operating within the -40°C to +85°C temperature range

Memory IC Procurement Notes

Verify that the specific suffix 'I' corresponds to the Industrial temperature grade (-40°C to +85°C) rather than Extended grade. Confirm the 'SN' package designation matches the required 8-lead SOIC form factor. Ensure the 'E64' variant is selected for the 64-bit address requirement, distinct from the E48 model. Cross-reference the datasheet revision to confirm pinout compatibility with existing designs.

Memory IC Selection Notes

Select this component when a unique hardware identifier is required without software management overhead. The 24AA02E64-I/SN is suitable for designs where the upper memory half can be reserved for the factory-assigned address. Consider the 8-byte page buffer size for write efficiency. Verify that the system voltage remains above 1.7V to ensure proper interface functionality at the specified 400 kHz speed.

Memory IC Part Context

This part belongs to the 24AA02XEXX family of 2 Kbit serial EEPROMs designed by Microchip Technology. It shares the same physical package and basic electrical characteristics as the 24AA02E48, differing primarily in the length of the pre-programmed node address. The series utilizes standard I2C protocols and is available in various packages including SOIC and SOT-23 variants.

Memory IC Replacement Considerations

The 24AA02E64T-I/SN serves as a tape-and-reel replacement for the tube-packaged unit. For applications requiring 48-bit addresses instead of 64-bit, the 24AA02E48-I/SN is the functional equivalent within the same package.