24AA025E48-I/SN

Memory IC Overview

The Microchip Technology 24AA025E48-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 I2C interface compatible with 100 kHz and 400 kHz clock frequencies. The device operates on a single supply voltage ranging from 1.7V to 5.5V. It includes a factory-programmed, globally unique EUI-48 node address stored in the upper half of the array (addresses 0xFA through 0xFF), which is permanently write-protected. The remaining 1,024 bits are available for user application data.

Memory IC Feature Summary

• Factory pre-programmed with a globally unique 48-bit IEEE EUI-48 node address for permanent identification
• Upper half of the memory array is permanently write-protected to preserve the node identity
• Supports page write operations with a 16-byte buffer for efficient data transfer
• Integrated Schmitt trigger inputs and noise suppression filters for reliable bus communication

Memory IC Applications

• Embedded systems requiring hardware-level MAC address binding
• Network devices needing unique node identification
• IoT modules requiring persistent device identity storage
• Industrial controllers utilizing I2C-based addressing schemes

Memory IC Procurement Notes

Verify that the specific ordering suffix matches the required package type and temperature range. Confirm the presence of the 'E48' designation to ensure the inclusion of the pre-programmed EUI-48 node address rather than standard EEPROM functionality. Check datasheet revisions for any updates regarding Organizationally Unique Identifier assignments or packaging changes before finalizing procurement specifications.

Memory IC Selection Notes

Select this component when a unique, unchangeable hardware identifier is required for network compliance or device tracking. The 24AA025E48 variant offers a larger page write buffer compared to the E48 counterpart, facilitating faster data writes. Ensure the system voltage supports the 1.7V minimum operating requirement and that the I2C bus timing aligns with the specified clock frequency limits for the chosen supply voltage.

Memory IC Part Context

This part belongs to the 24AA02XEXX family of 2 Kbit serial EEPROMs designed for applications requiring both general-purpose non-volatile storage and unique device identification. The 'I' suffix indicates an industrial temperature range rating, while the 'SN' suffix denotes the 8-lead SOIC package format. This series integrates low-power CMOS technology with robust noise protection features suitable for various embedded environments.

Memory IC Replacement Considerations

The 24AA02E48-I/SN serves as a direct functional substitute if the 16-byte page buffer is not required, though it lacks the cascading address capability. Verify that alternative parts support the same EUI-48 pre-programming standard and maintain compatibility with the existing I2C bus protocol and voltage levels.