24AA02E64-E/SN

Memory IC Overview

The Microchip Technology 24AA02E64-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 at VCC levels between 2.5V and 5.5V, and 100 kHz for voltages below 2.5V. The device operates on a single supply ranging from 1.7V to 5.5V. 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 component supports page writes of up to eight bytes.

Memory IC Feature Summary

• Factory programmed with a globally unique 64-bit EUI-64 node address for system identification
• Low-power CMOS technology enabling operation down to 1.7V with minimal standby current consumption
• Integrated Schmitt trigger inputs and output slope control for enhanced noise suppression and ground bounce elimination
• Supports self-timed erase/write cycles with acknowledge polling capability to maximize bus throughput

Memory IC Applications

• Systems requiring unique hardware node identification via EUI-64 standards
• Low-voltage embedded devices needing non-volatile data storage with high endurance
• I2C bus networks requiring robust noise immunity in industrial environments

Memory IC Procurement Notes

Verify that the specific suffix 'E' corresponds to the Automotive temperature range (-40°C to +125°C) as defined in the manufacturer's datasheet. Confirm the 'SN' package designation matches the required 8-lead SOIC form factor. Ensure the ordering code explicitly includes the 'E64' variant to guarantee the presence of the factory-programmed 64-bit node address rather than the 48-bit alternative.

Memory IC Selection Notes

Select this component when a globally unique identifier is required directly within the EEPROM structure without external configuration. The E-series rating is necessary for applications operating in extended temperature environments up to 125°C. The 8-byte page buffer size distinguishes it from the 16-byte variants found in the 24AA025 series. Ensure the system voltage remains above 2.5V if 400 kHz communication speeds are critical.

Memory IC Part Context

This part belongs to the 24AA02XEXX family of 2 Kbit serial EEPROMs designed by Microchip Technology. It shares architectural similarities with the 24AA02E48 but differs in its pre-programmed address length. The device utilizes standard I2C protocols and is available in multiple package options including SOIC and SOT-23 variants, catering to diverse PCB layout constraints.

Memory IC Replacement Considerations

The 24AA02E64-I/SN serves as the Industrial temperature rated equivalent. The 24AA025E64 series offers a larger 16-byte page buffer but requires different chip select pin configurations.