24AA025E64T-I/OT

Memory IC Overview

The Microchip Technology 24AA025E64T-I/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). The device operates on a single supply voltage ranging from 1.7V to 5.5V and supports industrial temperature ranges (-40°C to +85°C). It includes a 16-byte page write buffer, pre-programmed globally unique EUI-64™ node addresses, and output slope control to eliminate ground bounce.

Memory IC Feature Summary

• Pre-programmed with globally unique, factory-set 64-bit EUI-64™ Node Address stored in the upper half of the array.
• Features a 16-byte page write buffer for efficient data transfer and self-timed erase/write cycles.
• Includes Schmitt trigger inputs for noise suppression and output slope control to minimize ground bounce.
• Supports up to four devices on the same bus via chip select bits A0 and A1.

Memory IC Applications

• System identification and inventory tracking using unique IEEE addresses
• Low-voltage embedded systems requiring non-volatile configuration storage
• I2C bus expansion with contiguous addressing capabilities

Memory IC Procurement Notes

Verify that the specific ordering suffix matches the required package type, as the 'T' indicates tape and reel packaging while other suffixes may denote cut tape or tubes. Confirm the temperature grade corresponds to your environmental requirements, ensuring the 'I' designation aligns with industrial specifications. Cross-reference the datasheet revision to ensure compatibility with your system's electrical constraints and pinout definitions.

Memory IC Selection Notes

Select this component when a unique hardware identifier is required without external programming overhead. The 24AA025E64 variant specifically provides an 8-byte EUI-64 address, eliminating the need for software encapsulation compared to EUI-48 models. Ensure the application utilizes the available chip select pins A0 and A1, as the 6-lead SOT-23 package does not expose the A2 pin, limiting simultaneous bus connections to four units.

Memory IC Part Context

This part belongs to the 24AA02XEXX family of 2 Kbit serial EEPROMs designed for low-power applications. Unlike standard variants, the 'E64' suffix denotes integration of a permanent 64-bit IEEE address. The device shares core architecture with the 24AA02E48 but differs in address length and page buffer size, offering a 16-byte buffer compared to the 8-byte buffer found in the E48 series.

Memory IC Replacement Considerations

The 24AA025E48T-I/OT serves as a direct substitute if a 48-bit address is sufficient. For higher density needs, consider the 24LC256 series, though it lacks the factory-programmed node identity. Verify that any replacement maintains the 6-lead SOT-23 footprint and compatible I2C timing characteristics.