25AA02E48T-I/OT

Memory IC Overview

The Microchip Technology 25AA02E48T-I/OT is a 2 Kbit Serial Electrically Erasable Programmable Read-Only Memory (EEPROM) utilizing a Serial Peripheral Interface (SPI). It features a 256 x 8-bit organization with a 16-byte page write mode. The device operates within a voltage range of 1.8V to 5.5V and supports clock frequencies up to 10 MHz at higher voltages. It includes a factory-programmed, globally unique 48-bit EUI-48™ node address stored in the upper quarter of the array. Key electrical characteristics include a maximum standby current of 1 µA and an endurance rating of 1,000,000 erase/write cycles.

Memory IC Feature Summary

• Preprogrammed with a globally unique 48-bit EUI-48™ Node Address for identification
• Compatible with standard SPI bus protocols including Hold functionality
• Hardware and software-based write protection mechanisms
• Low-power CMOS technology with high data retention capabilities

Memory IC Applications

• System identification and authentication in embedded networks
• Device tracking and inventory management systems
• Configuration storage requiring unique hardware identifiers
• Industrial control systems needing reliable non-volatile memory

Memory IC Procurement Notes

Verify that the specific suffix 'I' corresponds to the Industrial temperature range (-40°C to +85°C) as defined in the datasheet. Confirm the package type 'OT' matches the required 6-lead SOT-23 footprint for PCB layout. Ensure the design accounts for the preprogrammed EUI-48™ address location, which occupies the upper quarter of the memory array and is write-protected by default.

Memory IC Selection Notes

Select this component when a unique hardware identifier is required alongside standard EEPROM functionality. The 25AA02E48 variant provides a 48-bit address, whereas the 25AA02E64 offers a 64-bit address. Consider the 16-byte page write limit and the internal write cycle time when designing write-intensive applications. Verify voltage compatibility across the full operating range.

Memory IC Part Context

This part belongs to the 25AA02EXX family of 2 Kbit SPI Serial EEPROMs from Microchip Technology. It shares functional similarities with other devices in the series but is distinguished by its specific factory-programmed EUI-48™ node address. The 'T' indicates tape and reel packaging, while 'I' denotes the industrial temperature grade.

Memory IC Replacement Considerations

The 25AA02E64T-I/OT serves as a direct substitute if a 64-bit EUI-64™ address is preferred over the 48-bit format. Other 25AA02xx series devices may be compatible if the unique node address feature is not required.