24AA02E64T-I/SN

Memory IC Overview

The Microchip Technology 24AA02E64T-I/SN is a 2 Kbit Electrically Erasable PROM organized as two blocks of 128 x 8-bit memory. It features a 2-wire serial interface compatible with I2C, supporting clock frequencies up to 400 kHz at VCC levels between 2.5V and 5.5V, and 100 kHz when VCC is 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 utilizes low-power CMOS technology, offering a maximum standby current of 1 µA in industrial temperature ranges.

Memory IC Feature Summary

• Pre-programmed with a factory-set, globally unique 64-bit EUI-64 node address for system identification
• Features an 8-byte page write buffer to optimize data transfer efficiency
• Incorporates Schmitt trigger inputs and output slope control to suppress noise and eliminate ground bounce
• Includes hardware write protection for the upper half of the memory array

Memory IC Applications

• System identification and tracking using IEEE EUI-64 standards
• Low-voltage embedded systems requiring non-volatile configuration storage
• I2C bus networks requiring unique node addressing without external components

Memory IC Procurement Notes

Verify that the specific suffix 'SN' corresponds to the 8-lead SOIC package and 'T' indicates tape and reel packaging. Confirm the 'I' designation matches the required industrial temperature range of -40°C to +85°C. Ensure the EUI-64 variant is selected over the EUI-48 version based on application requirements. Cross-reference the datasheet revision to confirm compatibility with existing design specifications.

Memory IC Selection Notes

Select this component when a unique hardware identifier is required directly within the EEPROM structure. The 8-byte page buffer supports efficient data writing compared to byte-write-only devices. Consider the 1.7V minimum operating voltage for battery-powered or low-voltage logic applications. Verify that the 400 kHz speed requirement is met by the specific supply voltage conditions defined in the AC characteristics.

Memory IC Part Context

This part belongs to the 24AA02XEXX family of 2 Kbit serial EEPROMs manufactured by Microchip Technology. The family distinguishes itself through the integration of IEEE-compliant node addresses. Variants include EUI-48 and EUI-64 options, available in SOIC and SOT-23 packages. The 24AA02E64 specifically provides the longer 64-bit address format natively.

Memory IC Replacement Considerations

The 24AA02E64T-I/OT serves as a pin-compatible replacement if a SOT-23 package is acceptable instead of the SOIC form factor. Other members of the 24AA02XEXX family share similar electrical characteristics but differ in address length or package type.