24AA02UID-I/P

Memory IC Overview

The Microchip Technology 24AA02UID-I/P is a 2 Kbit (256 x 8) electrically erasable programmable read-only memory featuring a preprogrammed, unique 32-bit serial number. It utilizes a 2-wire I²C compatible interface with a maximum clock frequency of 400 kHz and operates on a single supply voltage ranging from 1.7 V to 5.5 V. The device includes an 8-byte page write buffer and supports industrial temperature ranges from -40°C to +85°C.

Memory IC Feature Summary

• Factory-programmed unique 32-bit serial number stored in the upper half of the array
• Upper half of the memory array is permanently write-protected while the lower half remains user-accessible
• Integrated Schmitt trigger inputs provide noise suppression for reliable data transmission

Memory IC Applications

• Hardware-based device identification and authentication
• Secure asset tracking and anti-counterfeiting systems
• Embedded system component registration

Memory IC Procurement Notes

Verify that the specific part number suffix matches the required package type and temperature grade. Confirm that the application design accommodates the permanent write protection of the upper memory array. Ensure the I²C bus pull-up resistors are selected appropriately for the operating voltage and clock speed requirements.

Memory IC Selection Notes

Select this component when a fixed, unchangeable hardware identifier is required for security purposes. The 24AA02UID-I/P is suitable for designs needing low standby current and operation down to 1.7 V. Consider the 8-byte page write capability for efficient data storage in the unprotected lower memory section.

Memory IC Part Context

This device belongs to the 24AA02XUID family of serial EEPROMs manufactured by Microchip Technology. It shares the same electrical characteristics and interface protocols as other members of the series but is distinguished by its factory-installed unique identifier. The 'I' designation indicates compliance with industrial temperature specifications.

Memory IC Replacement Considerations

The 24AA025UID-I/P serves as a functional substitute within the same family, offering identical core features but utilizing a 16-byte page write buffer instead of 8 bytes.