24AA02T-I/SN

Memory IC Overview

The Microchip Technology 24AA02T-I/SN is a 2-Kbit (256 x 8) serial EEPROM featuring an I²C-compatible two-wire interface. It operates on a single supply voltage ranging from 1.7V to 5.5V with a maximum clock frequency of 400 kHz at VCC ≥ 2.5V, or 100 kHz when VCC is between 1.7V and 2.5V. The device utilizes low-power CMOS technology, drawing a maximum read current of 1 mA and standby current of 1 µA in industrial temperature ranges (-40°C to +85°C). It includes hardware write protection via the WP pin, supports page writes up to 8 bytes, and offers data retention exceeding 200 years.

Memory IC Feature Summary

• Low-voltage operation down to 1.7V with minimal active and standby power consumption
• I²C compatible two-wire serial interface with Schmitt trigger inputs for noise suppression
• Hardware write-protect capability controlled by the WP pin to inhibit memory writes
• High reliability with over one million erase/write cycles and extended data retention

Memory IC Applications

• Data logging systems requiring non-volatile storage
• Configuration parameter storage in embedded controllers
• Calibration data retention in sensor modules
• Device identification and unique ID tracking in IoT endpoints

Memory IC Procurement Notes

Verify that the ordering suffix 'T' corresponds to tape-and-reel packaging as specified in the datasheet package section. Confirm the 'I' suffix indicates the Industrial temperature grade (-40°C to +85°C). Ensure the 'SN' suffix matches the 8-Lead SOIC package type required for your PCB layout. Cross-reference the full part number against the manufacturer's latest datasheet revision to confirm RoHS compliance status and any recent design changes.

Memory IC Selection Notes

Select this component when a 2-Kbit capacity is sufficient for application requirements. Choose this specific variant over the 24LC02B if operation below 2.5V is necessary, as the 24LC02B requires a minimum of 2.5V. Consider the 24FC02 only if a higher clock speed of 1 MHz is required. Ensure the system design accommodates the 8-byte page write buffer limitation to prevent data rollover during bulk writes.

Memory IC Part Context

This device belongs to the 24XX02 family of serial EEPROMs, which shares architectural similarities with the 24LC02B and 24FC02. While they share the same memory organization and interface protocol, they differ in voltage tolerance and clock speed specifications. The 24AA02 series is specifically optimized for lower voltage applications compared to the standard 2.5V minimum of the LC series.

Memory IC Replacement Considerations

Direct functional substitutes within the same package include the 24AA02T-I/SN without the UID designation if unique IDs are not needed. For higher speed requirements, the 24FC02T-I/SN is compatible but requires verification of bus timing constraints. The 24LC02B cannot replace this part if voltages below 2.5V are utilized.