24AA02HT-I/SN

Memory IC Overview

The Microchip Technology 24AA02HT-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 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 8 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

• Data logging in low-power embedded systems
• Configuration storage in consumer electronics
• Parameter storage in industrial controllers

Memory IC Procurement Notes

Verify the specific suffix 'SN' corresponds to the 8-Lead SOIC package when sourcing. Confirm the 'I' designation indicates the Industrial temperature grade (-40°C to +85°C). Ensure the 'HT' variant matches the required half-array write protect functionality. Cross-reference the datasheet revision DS20002105B for accurate electrical characteristics.

Memory IC Selection Notes

Select this component for applications requiring low-voltage operation down to 1.7V and high endurance. The 8-byte page write buffer improves write efficiency compared to byte-write-only devices. The hardware write-protect feature provides security for critical configuration data without software overhead. Consider the SOIC package dimensions for PCB layout constraints.

Memory IC Part Context

This part belongs to the 24AA02H/24LC02BH family of 2-Kbit serial EEPROMs. It shares functional similarities with other members like the 24AA02 but distinguishes itself through the integrated half-array write protection mechanism. The 'SN' suffix specifically denotes the 8-Lead Plastic Small Outline package type used in surface-mount assemblies.

Memory IC Replacement Considerations

Direct substitutes include other 24AA02 variants with identical pinouts and functionality, such as 24AA02T-I/SN or 24AA02E64T-I/SN, provided the half-array write protect feature is not strictly required or can be managed via software.