24AA02UIDT-I/OT

Memory IC Overview

The Microchip Technology 24AA02UIDT-I/OT is a 2 Kbit (256 x 8) serial EEPROM featuring a preprogrammed 32-bit unique identifier. It utilizes an I²C-compatible 2-wire interface with clock frequencies up to 400 kHz and operates on a single supply voltage ranging from 1.7V to 5.5V. The device is housed in a 5-lead SOT-23 surface-mount package and supports industrial temperature ranges from -40°C to +85°C.

Memory IC Feature Summary

• Factory-programmed 32-bit unique serial number permanently stored in the upper half of the memory array
• I²C compatible 2-wire serial interface supporting standard and fast mode clock rates
• Low-power CMOS technology enabling operation down to 1.7V with minimal standby current
• Hardware write protection for the upper memory half containing the unique ID

Memory IC Applications

• Device identity authentication and secure boot processes
• Anti-counterfeiting and product traceability systems
• IoT endpoint identification and MAC address generation
• Firmware binding and license management

Memory IC Procurement Notes

Verify that the specific part number suffix matches the required package type, as the UID family includes variants with different pin counts such as 6-lead SOT-23 or 8-lead packages. Confirm the temperature grade corresponds to the application environment requirements. Ensure the ordering code aligns with the desired tape and reel packaging format for automated assembly.

Memory IC Selection Notes

Select this component when a hardware-based, immutable device identifier is required for security applications. It is suitable for designs needing low-voltage operation and compact surface-mount footprints. Consider the page write buffer size and bus addressing constraints if multiple devices are used on the same I²C bus.

Memory IC Part Context

This component belongs to the Microchip 24AA02XUID series of serial EEPROMs. It shares architectural similarities with other 2Kbit I²C EEPROMs but is distinguished by its factory-lasered unique identifier. The 'T' suffix indicates tape-and-reel packaging, while '/OT' specifies the SOT-23 package style.

Memory IC Replacement Considerations

Direct substitutes include other members of the 24AA02UID family, such as the 24AA025UIDT-I/OT, which offers a larger page buffer but requires a 6-lead package. Standard 24AA02T-I/OT parts lack the unique identifier feature.