24AA02E48T-I/SN

Memory IC Overview

The Microchip Technology 24AA02E48T-I/SN is a 2 Kbit (256 x 8) non-volatile EEPROM featuring an I²C serial interface with clock frequencies up to 400 kHz. It operates on a single supply voltage ranging from 1.7V to 5.5V and is housed in an 8-lead SOIC package. The device includes pre-programmed globally unique EUI-48™ node addresses stored in the upper half of the memory array, which is permanently write-protected. It supports page writes of up to eight bytes and offers industrial temperature range operation from -40°C to +85°C.

Memory IC Feature Summary

• Factory-programmed globally unique 48-bit EUI-48™ node address for device 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
• Page write buffer capability allowing efficient multi-byte data storage

Memory IC Applications

• Device identity and authentication in embedded systems
• Asset tracking and inventory management using unique node IDs
• Configuration storage in low-voltage consumer electronics
• Industrial control systems requiring reliable non-volatile memory

Memory IC Procurement Notes

Verify that the specific part number matches the required EUI-48™ addressing variant, as other models in the family may use EUI-64™ or lack pre-programmed addresses. Confirm the suffix indicates the Industrial temperature grade (-40°C to +85°C) and the 8-SOIC package. Ensure compatibility with the system's I²C bus voltage levels, noting that clock frequency limits apply below 2.5V. Check for RoHS compliance requirements if applicable to the manufacturing process.

Memory IC Selection Notes

Select this component when a unique hardware identifier is required without external configuration. The 24AA02E48T-I/SN is distinct from the 24AA025E48T variant due to its fixed 8-byte page size and lack of chip select pins (A0-A2), limiting bus expansion capabilities. It is suitable for applications where space is constrained by the 8-SOIC package and low power consumption is critical. Consider the 24AA02E64T model if a native 64-bit address is preferred over encapsulation.

Memory IC Part Context

This device belongs to the 24AA02XEXX family of 2 Kbit I²C Serial EEPROMs designed by Microchip Technology. The family differentiates models based on their pre-programmed address length (EUI-48™ vs. EUI-64™) and page write buffer sizes. The 'E' in the part number denotes the EUI-48™ address variant, while 'I' specifies the industrial temperature rating. These devices are engineered for high reliability with over one million erase/write cycles and long data retention.

Memory IC Replacement Considerations

Direct functional substitutes within the same family include the 24AA025E48T-I/SN, which offers a larger 16-byte page buffer but requires chip select pin configuration. For applications requiring 64-bit identifiers, the 24AA02E64T-I/SN provides a native EUI-64™ address. If the pre-programmed address is not needed, standard EEPROMs like the 24AA025T-I/SN can be used, though they lack the unique identity feature.