24AA02H-I/ST

Memory IC Overview

The Microchip Technology 24AA02H-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 with a maximum clock frequency of 400 kHz at voltages above 2.5V. The device includes hardware write protection for the upper half of the memory array (addresses 80h-FFh) via the WP pin and supports page writes of up to eight bytes. It offers over one million erase/write cycles, data retention exceeding 200 years, and operates within an industrial temperature range of -40°C to +85°C.

Memory IC Feature Summary

• Hardware write protection for the upper half of the memory array
• Schmitt trigger inputs for noise suppression
• Output slope control to eliminate ground bounce
• Self-timed erase and write cycle

Memory IC Applications

• Industrial systems requiring non-volatile data storage
• Low-voltage embedded applications
• Systems needing hardware-level write protection for critical data segments

Memory IC Procurement Notes

Verify the specific suffix 'I/ST' corresponds to the Industrial temperature grade (-40°C to +85°C) and TSSOP-8 package. Confirm that the 'H' designation indicates the half-array write protect feature. Ensure compatibility with the host system's I2C bus voltage levels and timing requirements before finalizing procurement.

Memory IC Selection Notes

Select this component when a 2 Kbit EEPROM with hardware write protection for the upper memory half is required. It is suitable for designs operating down to 1.7V. Consider the TSSOP-8 package for surface-mount assembly. Verify that the 400 kHz clock speed meets the system's communication requirements.

Memory IC Part Context

This part belongs to the 24XX02H family of 2 Kbit serial EEPROMs. The 'I' suffix denotes the industrial temperature range, while 'ST' specifies the 8-lead Thin Shrink Small Outline package. It shares functional similarities with the 24LC02BH but differs in minimum operating voltage specifications.

Memory IC Replacement Considerations

Direct replacements include other 24AA02H variants with different packages or the 24LC02BH series, provided voltage ranges are compatible.