24AA02H-I/MS

Memory IC Overview

The Microchip Technology 24AA02H-I/MS 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 clock frequency of 400 kHz. The device features hardware write protection for the upper half of the memory array (addresses 80h-FFh) via the WP pin, an 8-byte page write buffer, and Schmitt trigger inputs for noise suppression. It supports industrial temperature ranges (-40°C to +85°C), offers over one million erase/write cycles, and includes acknowledge polling capabilities.

Memory IC Feature Summary

• Hardware write protection for the upper half of the memory array when the WP pin is tied high
• Low-power CMOS technology enabling operation down to 1.7V with minimal active and standby currents
• Integrated 8-byte page write buffer to optimize data transfer efficiency
• Schmitt trigger inputs and output slope control to suppress noise and eliminate ground bounce

Memory IC Applications

• Data logging in battery-powered portable devices
• Configuration storage in consumer electronics
• Parameter retention in industrial control systems
• Calibration data storage in automotive modules

Memory IC Procurement Notes

Verify that the ordering suffix matches the MSOP package type and Industrial temperature grade. Confirm RoHS compliance status as specified in the latest datasheet revision. Ensure the supplier provides traceability documentation consistent with Microchip manufacturing standards. Check for any specific handling requirements related to electrostatic discharge protection during receipt and storage.

Memory IC Selection Notes

Select this component for applications requiring low-voltage operation starting at 1.7V and hardware-level write protection for critical data segments. The 8-byte page buffer suits designs needing efficient sequential writes. Verify that the system bus timing meets the 400 kHz specification and that the I2C pull-up resistors are correctly sized for the operating voltage range.

Memory IC Part Context

This part belongs to the 24XX02H family of 2 Kbit serial EEPROMs. It shares functional similarities with the 24LC02BH but differs in minimum operating voltage. The 'I' suffix denotes the Industrial temperature range, while 'MS' specifies the 8-lead MSOP package. It serves as a non-volatile memory solution for small data storage needs in compact surface-mount designs.

Memory IC Replacement Considerations

Direct replacements include other 24AA02H variants with different packages such as PDIP or SOIC. Cross-family alternatives like the 24AA02 without half-array protection may be considered if write protection is not required. Verify pin compatibility and electrical specifications before substitution.