24AA01H-I/ST

Memory IC Overview

The Microchip Technology 24AA01H-I/ST is a 1 Kbit (128 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 and supports clock frequencies up to 400 kHz. The device features hardware write protection for the upper half of the memory array, Schmitt trigger inputs for noise suppression, and output slope control to minimize ground bounce. It is rated for industrial temperature operation between -40°C and +85°C.

Memory IC Feature Summary

• Hardware write-protect capability for the upper half of the memory array via the WP pin
• I²C-compatible bidirectional serial data transfer protocol with support for standard and fast modes
• Schmitt trigger inputs and internal VCC threshold detector for enhanced noise immunity and low-voltage reliability

Memory IC Applications

• Low-power embedded systems requiring non-volatile data storage
• Industrial control devices operating in electrically noisy environments
• Battery-powered applications benefiting from ultra-low standby current consumption

Memory IC Procurement Notes

Verify that the ordering suffix 'I' corresponds to the Industrial temperature grade (-40°C to +85°C) and 'ST' indicates the 8-lead TSSOP package. Confirm the specific revision level matches your design requirements. Ensure the component meets RoHS compliance standards if required by your manufacturing process. Cross-reference the datasheet DS22104A for complete electrical specifications before finalizing procurement.

Memory IC Selection Notes

Select this component when a small footprint and low-voltage operation are critical. The 24AA01H supports operation down to 1.7V, making it suitable for battery-operated devices where power conservation is essential. The integrated hardware write protection simplifies circuit design by preventing accidental data corruption in sensitive memory regions without additional logic components.

Memory IC Part Context

This part belongs to the 24XX01H family of 1 Kbit serial EEPROMs. It shares functional similarities with the 24LC01BH but differs in minimum operating voltage, supporting 1.7V compared to the 2.5V minimum of the LC variant. Both devices utilize the same I²C interface and offer comparable endurance and data retention characteristics within their respective temperature grades.

Memory IC Replacement Considerations

The 24LC01BH serves as a direct functional substitute, provided the system voltage remains above 2.5V. Verify that the replacement part's temperature range aligns with your application's environmental conditions. Package compatibility must be confirmed when swapping between different suffixes.