24AA02E48T-E/OT

Memory IC Overview

The Microchip Technology 24AA02E48T-E/OT is a 2 Kbit serial EEPROM featuring an I²C interface and SOT-23-5 package. It operates on a single supply voltage ranging from 1.7V to 5.5V with a maximum clock frequency of 400 kHz (100 kHz below 2.5V). The device includes a pre-programmed, globally unique 48-bit EUI-48 node address stored in the upper half of the memory array, which is permanently write-protected. It supports page writes of up to 8 bytes and offers data retention exceeding 200 years with over one million erase/write cycles.

Memory IC Feature Summary

• Pre-programmed globally unique 48-bit EUI-48 node address for hardware identification
• Low-power CMOS technology enabling operation down to 1.7V with minimal standby current
• I²C compatible 2-wire serial interface with Schmitt trigger inputs for noise suppression
• Extended temperature range capability suitable for automotive applications

Memory IC Applications

• IoT device identity authentication and secure boot processes
• MAC address storage for network-enabled embedded systems
• Automotive electronic control unit configuration and tracking
• Anti-counterfeiting and product serialization in manufacturing

Memory IC Procurement Notes

Verify that the ordering suffix 'E' corresponds to the extended temperature range (-40°C to +125°C) and 'T' indicates tape and reel packaging. Confirm the '48' suffix matches the required EUI-48 node address format rather than EUI-64. Ensure the 'OT' suffix aligns with the specific SOT-23-5 variant requirements for your PCB layout.

Memory IC Selection Notes

Select this component when a permanent, factory-burned hardware identifier is required for security or tracking purposes. It is suitable for designs needing low-voltage operation and high endurance. Choose the E-temperature grade for harsh environments. Note that the upper memory half is reserved for the UID and cannot be used for general data storage.

Memory IC Part Context

This part belongs to the 24AA02XEXX family of 2 Kbit serial EEPROMs designed by Microchip Technology. The family differentiates models based on their pre-programmed node address type (EUI-48 vs. EUI-64) and operating temperature ranges. The 24AA02E48 specifically integrates the IEEE-standardized 48-bit address structure into its non-volatile memory architecture.

Memory IC Replacement Considerations

Direct substitutes within the same family include the 24AA025E48T-E/OT, which offers a larger page buffer but requires a 6-lead package. For EUI-64 requirements, consider the 24AA02E64T-E/OT. Standard industrial grade versions like the 24AA02E48T-I/OT are pin-compatible but lack the extended temperature rating.