24AA02T-I/ST

Memory IC Overview

The Microchip Technology 24AA02T-I/ST 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 and supports clock frequencies up to 400 kHz at voltages of 2.5V or higher, with 100 kHz compatibility below 2.5V. The device includes an 8-byte page write buffer, hardware write protection via the WP pin, and Schmitt trigger inputs for noise suppression. It is housed in an 8-lead TSSOP package and functions within an industrial temperature range of -40°C to +85°C.

Memory IC Feature Summary

• Supports bidirectional data transfer using a standard two-wire serial bus protocol compatible with I²C.
• Includes an 8-byte page write buffer to optimize data throughput during sequential write operations.
• Features hardware write protection that inhibits all memory writes when the WP pin is tied to VCC.
• Incorporates Schmitt trigger inputs and output slope control to suppress noise spikes and eliminate ground bounce.

Memory IC Applications

• Non-volatile data storage for system configuration parameters
• Calibration value retention in measurement instruments
• Device identification and unique ID storage in embedded systems

Memory IC Procurement Notes

Verify the specific ordering suffix 'T' corresponds to the tape-and-reel packaging format required for automated surface-mount assembly processes. Confirm that the 'I' designation aligns with the necessary industrial operating temperature range for the target application environment. Ensure the voltage supply meets the minimum 1.7V requirement for proper operation.

Memory IC Selection Notes

Select this component when a low-voltage, non-volatile memory solution is required for storing small amounts of persistent data. The 24AA02T-I/ST is suitable for designs utilizing I²C buses where space efficiency is prioritized through the compact TSSOP package. Consider the 400 kHz maximum clock speed for applications requiring moderate data transfer rates without complex interface logic.

Memory IC Part Context

This part belongs to the 24XX02 family of 2-Kbit serial EEPROMs manufactured by Microchip Technology. The family shares identical functional architectures but varies in voltage ranges, clock speeds, and automotive qualifications across the 24AA02, 24LC02B, and 24FC02 variants. The 24AA02 specifically targets general-purpose applications requiring operation down to 1.7V.

Memory IC Replacement Considerations

Direct substitutes within the same package include other 24AA02 variants such as 24AA02-I/ST. Cross-family replacements like 24LC02B or 24FC02 require verification of voltage compatibility and clock frequency limits, as these differ from the 24AA02 specifications.