24AA02UID-I/SN

Memory IC Overview

The Microchip Technology 24AA02UID-I/SN is a 2 Kbit (256 x 8) serial EEPROM featuring a preprogrammed 32-bit unique serial number. It operates on a single supply voltage ranging from 1.7V to 5.5V with maximum standby current of 1 µA and read current of 1 mA. The device utilizes an I²C-compatible 2-wire serial interface supporting clock frequencies up to 400 kHz. It includes Schmitt trigger inputs for noise suppression, output slope control, and ESD protection exceeding 4,000V. The industrial temperature range spans from -40°C to +85°C.

Memory IC Feature Summary

• Preprogrammed 32-bit unique serial number stored in the upper half of the array
• I²C compatible 2-wire serial interface with support for standard and fast modes
• Schmitt trigger inputs provide enhanced noise suppression capabilities
• Output slope control designed to eliminate ground bounce effects

Memory IC Applications

• Device identification and authentication systems
• Secure data storage requiring hardware-level uniqueness
• Industrial control applications operating within extended temperature ranges
• Low-power embedded memory solutions

Memory IC Procurement Notes

Verify the specific suffix 'I' confirms the industrial temperature rating of -40°C to +85°C. Confirm the 'SN' designation corresponds to the 8-lead SOIC package type. Ensure compatibility with the required I²C bus voltage levels between 1.7V and 5.5V. Check for RoHS compliance status if required by assembly specifications.

Memory IC Selection Notes

Select this component when a fixed, factory-programmed hardware identifier is required for security or tracking purposes. The 24AA02UID variant lacks address pins A0-A2, simplifying bus design compared to the 24AA025UID. Consider the 8-byte page write buffer size for write efficiency. Verify that the 400 kHz clock speed meets system timing requirements at the lowest operating voltage.

Memory IC Part Context

This part belongs to the 24AA02XUID family of 2 Kbit serial EEPROMs. It shares architectural similarities with the 24LC02B but adds the unique ID feature. The device is distinct from the 24AA025UID, which offers chip select pins for multi-device addressing and a larger 16-byte page buffer. Both variants utilize the same core memory technology and interface protocols.

Memory IC Replacement Considerations

The 24AA025UID-I/SN serves as a functional substitute, offering identical electrical characteristics and memory density. The primary difference lies in the presence of address pins A0, A1, and A2 on the 24AA025UID, allowing for multiple devices on a single bus. Software must account for the fixed slave address configuration of the 24AA02UID.