24AA02E64T-E/OT

Memory IC Overview

The Microchip Technology 24AA02E64T-E/OT 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 utilizes low-power CMOS technology with standby currents up to 5 µA and active read currents up to 1 mA. The device includes an 8-byte page write buffer and supports self-timed erase/write cycles. It is housed in a 5-lead SOT-23 package and rated for extended industrial temperatures ranging from -40°C to +125°C.

Memory IC Feature Summary

• Factory-programmed globally unique 64-bit EUI-64™ node address stored in the upper half of the array
• Integrated Schmitt trigger inputs and output slope control for noise suppression and ground bounce elimination
• Supports acknowledge polling to maximize bus throughput during internal write cycles
• Upper half of the memory array is permanently write-protected while remaining bits are available for application use

Memory IC Applications

• Network node identification systems requiring unique hardware addresses
• Low-voltage embedded devices needing non-volatile storage for configuration data
• I2C bus expansion applications utilizing contiguous addressing across multiple devices
• Industrial equipment operating within extended temperature environments

Memory IC Procurement Notes

Verify that the specific ordering suffix matches the required temperature range and package type. Confirm the presence of the EUI-64™ identifier in the factory programming specifications. Ensure compatibility with the system's I2C voltage levels and pull-up resistor requirements. Check for RoHS compliance documentation if environmental regulations apply to the final assembly.

Memory IC Selection Notes

Select this component when a unique IEEE-compliant 64-bit identifier is required alongside standard EEPROM functionality. The automotive-grade temperature rating makes it suitable for harsh environments where standard industrial parts may fail. Consider the 8-byte page buffer size for write efficiency compared to byte-write-only alternatives. Verify that the 5-pin SOT-23 package fits the available PCB footprint constraints.

Memory IC Part Context

This part belongs to the 24AA02XEXX family of 2 Kbit serial EEPROMs designed for I2C communication. Unlike the E48 variant which uses a 48-bit address, this model specifically incorporates a 64-bit EUI-64™ identifier. It shares the same low-voltage architecture and physical dimensions as other members of the series but differs in its pre-programmed identity block structure.

Memory IC Replacement Considerations

Direct substitutes include the 24AA02E48T-E/OT, though it contains a 48-bit EUI-48™ address instead of 64-bit. Other family members like the 24AA025E64T-E/OT offer different package options or page sizes but maintain similar electrical characteristics.