24AA02-I/SN

Memory IC Overview

The Microchip Technology 24AA02-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. The device supports page writes up to 8 bytes and includes hardware write protection via the WP pin. It is housed in an 8-lead SOIC package and functions within an industrial temperature range of -40°C to +85°C.

Memory IC Feature Summary

• Low-power CMOS technology enabling operation down to 1.7V
• I²C compatible two-wire serial interface with Schmitt trigger inputs for noise suppression
• Hardware write-protect capability controlled by the WP pin
• High reliability with over one million erase/write cycles and data retention exceeding 200 years

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 security code storage

Memory IC Procurement Notes

Verify that the specific ordering suffix matches the required package type, as the base part number covers multiple form factors. Confirm the temperature grade corresponds to the intended operating environment. Ensure the voltage supply aligns with the 1.7V minimum requirement for this specific variant. Check for any recent product change notices regarding packaging or material composition updates.

Memory IC Selection Notes

Select this component when a small memory footprint is sufficient for application needs. The 24AA02-I/SN is suitable for designs requiring low standby current and robust noise immunity through Schmitt triggers. Consider the 8-byte page buffer for efficient data writing operations. Ensure the host controller supports the standard I²C protocol timing requirements for reliable communication.

Memory IC Part Context

This device belongs to the 24XX02 family of serial EEPROMs, which also includes the 24LC02B and 24FC02 variants. While sharing similar architecture, these models differ in voltage ranges and maximum clock speeds. The 24AA02 specifically supports lower voltage operation compared to the 24LC02B series.

Memory IC Replacement Considerations

The 24LC02B serves as a functional alternative but requires a minimum supply voltage of 2.5V. The 24FC02 offers higher speed compatibility up to 1 MHz. Verify that the replacement part's package dimensions and pinout are compatible with the existing PCB layout.