24AA02/SN

Memory IC Overview

The Microchip Technology 24AA02/SN is a 2-Kbit (256 x 8-bit) 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. The device supports byte and page write operations, utilizing an 8-byte page buffer. Key electrical characteristics include a maximum standby current of 1 µA and a read access time of 900 ns at VCC ≥ 2.5V. It offers over one million erase/write cycles and data retention exceeding 200 years.

Memory IC Feature Summary

• Low-voltage CMOS technology enabling operation down to 1.7V with minimal active and standby currents.
• Hardware write-protect capability via the WP pin to inhibit memory writes when tied to VCC.
• Integrated Schmitt trigger inputs and output slope control for noise suppression and ground bounce elimination.
• Self-timed erase/write cycle with automatic acknowledge polling support to maximize bus throughput.

Memory IC Applications

• Data logging in industrial sensors
• Configuration storage in embedded systems
• Parameter storage in consumer electronics

Memory IC Procurement Notes

Verify that the specific ordering suffix matches the required package type and temperature grade. Confirm the voltage range compatibility with the target system, as the 24AA02 series supports 1.7V operation unlike some variants. Ensure the I²C bus pull-up resistors are selected appropriately for the operating speed and voltage level.

Memory IC Selection Notes

Select this component for applications requiring low-power non-volatile storage with simple serial connectivity. The 24AA02 variant is suitable for systems operating below 2.5V, whereas other family members may require higher voltages. Consider the 8-byte page buffer size for write efficiency and verify the SOIC-8 package availability for the PCB layout.

Memory IC Part Context

This part belongs to the 24XX02 family of 2-Kbit serial EEPROMs, which also includes the 24LC02B and 24FC02. While sharing the same memory architecture and interface, these variants differ in minimum operating voltage and maximum clock frequency. The 24AA02 specifically supports lower voltage operation compared to the 24LC02B.

Memory IC Replacement Considerations

Compatible substitutes within the same family include the 24LC02B and 24FC02, provided voltage and speed requirements are met. Verify package compatibility and ensure the replacement part supports the necessary write-protect functionality if used in the design.