24AA02UIDT-I/SN

Memory IC Overview

The Microchip Technology 24AA02UIDT-I/SN is a 2 Kbit (256 x 8) serial EEPROM featuring a preprogrammed, unique 32-bit serial number. It operates on a single supply voltage ranging from 1.7V to 5.5V with a maximum clock frequency of 400 kHz. The device utilizes an I²C-compatible 2-wire serial interface and includes Schmitt trigger inputs for noise suppression. Key electrical parameters include a maximum active read current of 1 mA and a standby current of 1 µA. It supports page writes of up to eight bytes and offers data retention exceeding 200 years.

Memory IC Feature Summary

• Factory-programmed unique 32-bit serial number stored in the upper half of the array
• I²C compatible 2-wire serial interface with support for standard and fast modes
• Hardware write protection for the upper memory half containing the serial number
• Low-power CMOS technology enabling operation down to 1.7V

Memory IC Applications

• Device identification and authentication in embedded systems
• Anti-counterfeiting and product serialization
• Secure boot and firmware binding applications
• IoT device tracking and lifecycle management

Memory IC Procurement Notes

Verify the specific suffix 'SN' corresponds to the SOIC-8 package as indicated by datasheet documentation. Confirm the 'I' designation matches the required industrial temperature range of -40°C to +85°C. Ensure the ordering code aligns with the tape-and-reel packaging format implied by the 'T' suffix. Cross-reference the manufacturer part number against official Microchip databases to confirm availability and revision status before procurement.

Memory IC Selection Notes

Select this component when a permanent, hardware-level unique identifier is required alongside standard EEPROM functionality. The 24AA02UIDT-I/SN is suitable for designs needing low power consumption and robust noise immunity via Schmitt triggers. Consider the 8-byte page buffer size for write efficiency. Verify that the I²C address configuration meets system bus requirements, noting that chip select pins are not utilized for this specific UID variant.

Memory IC Part Context

This part belongs to the 24AA02XUID family of serial EEPROMs manufactured by Microchip Technology. It shares the core architecture with the 24AA025UID but differs in page size and address pin availability. The device integrates non-volatile memory with a dedicated, permanently write-protected region for factory-assigned identifiers. It is designed for applications requiring high reliability and secure device identity verification.

Memory IC Replacement Considerations

Direct replacements within the same UID family include the 24AA025UID series, though page sizes differ. Standard 24AA02 variants without the UID feature may serve as functional substitutes if unique identification is not required. Verify package compatibility and voltage specifications when substituting.