24AA02HT-I/LT

Memory IC Overview

The Microchip Technology 24AA02HT-I/LT is a 2 Kbit (256 x 8) serial EEPROM utilizing an I2C-compatible two-wire interface. It operates on a single supply voltage ranging from 1.7V to 5.5V, with a maximum active read current of 1 mA and standby current of 1 µA. The device supports clock frequencies up to 400 kHz at voltages of 2.5V or higher, and 100 kHz below 2.5V. It features an 8-byte page write buffer, hardware write-protect for the upper half of the array via the WP pin, and Schmitt trigger inputs for noise suppression. The component is housed in a 5-lead SC-70 package and functions within an industrial temperature range of -40°C to +85°C.

Memory IC Feature Summary

• Hardware write-protect capability allows locking the upper half of the memory array when the WP pin is tied high.
• Integrated Schmitt triggers and input filters suppress noise spikes on the SDA and SCL lines.
• Output slope control minimizes ground bounce during switching operations.
• Supports acknowledge polling to determine internal write cycle completion.

Memory IC Applications

• Data logging in low-power embedded systems
• Configuration storage for microcontrollers
• Calibration data retention in industrial sensors

Memory IC Procurement Notes

Verify the specific ordering suffix against the manufacturer's latest datasheet to confirm package type and temperature grade. Ensure the design accommodates the SC-70 footprint dimensions. Confirm that the application voltage meets the minimum threshold for the desired clock frequency specifications.

Memory IC Selection Notes

Select this part for applications requiring small surface-mount packaging and low-voltage operation down to 1.7V. It is suitable where hardware write protection for half the memory is required without software overhead. Compare against the 24LC02BH variant if the system voltage does not drop below 2.5V.

Memory IC Part Context

This component belongs to the 24XX02H family of 2 Kbit serial EEPROMs. It shares functional characteristics with other members like the 24AA02H and 24LC02BH, differing primarily in operating voltage ranges and specific package availability. The 'HT' designation indicates a tape-and-reel packaging format optimized for automated assembly.

Memory IC Replacement Considerations

The 24AA02H-I/LT is a direct functional equivalent in the same package. The 24LC02BH series offers similar performance but requires a minimum supply voltage of 2.5V.