24AA04H-I/SN

Memory IC Overview

The Microchip Technology 24AA04H-I/SN is a 4-Kbit (512 x 8) Electrically Erasable PROM featuring an I2C-compatible two-wire serial 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-protect functionality for the upper half-array (addresses 100h-1FFh). It supports page writes up to 16 bytes and offers data retention exceeding 200 years with over one million erase/write cycles. The component is housed in an 8-Lead SOIC package and functions within an industrial temperature range of -40°C to +85°C.

Memory IC Feature Summary

• Hardware write-protect capability for the upper half of the memory array via the WP pin
• Low-power CMOS technology enabling operation down to 1.7V with minimal standby current
• Integrated Schmitt trigger inputs and output slope control for noise suppression and ground bounce elimination
• Self-timed erase/write cycle with automatic acknowledge polling support

Memory IC Applications

• Industrial systems requiring non-volatile data storage with write protection
• Consumer electronics utilizing low-voltage power supplies
• Embedded controllers needing compact serial EEPROM solutions
• Automotive applications compatible with AEC-Q100 standards

Memory IC Procurement Notes

Verify the specific suffix 'I' confirms the industrial temperature grade (-40°C to +85°C) and 'SN' denotes the 8-Lead SOIC package. Confirm RoHS compliance status as required by project specifications. Ensure the ordering part number matches the exact datasheet revision for accurate electrical characteristics. Check for any recent Product Change Notifications regarding packaging or manufacturing location updates.

Memory IC Selection Notes

Select this component when a 4-Kbit capacity with hardware write-protect features is required. The 24AA04H variant supports lower voltage operation starting at 1.7V compared to other family members. Consider the 8-Lead SOIC package dimensions for PCB layout constraints. Verify that the 400 kHz clock speed meets the system bus timing requirements. Evaluate the need for half-array protection versus full-array access based on application security needs.

Memory IC Part Context

This device belongs to the 24XX04H family of 4-Kbit I2C Serial EEPROMs, which also includes the 24LC04BH and 24FC04H variants. These devices share similar architectural features but differ in voltage ranges and clock speeds. The 24AA04H specifically targets applications requiring operation down to 1.7V. The family supports multiple package options including MSOP, PDIP, and TDFN.

Memory IC Replacement Considerations

Direct substitutes include other 24AA04H variants with different packages such as 24AA04H-I/MS or 24AA04H-I/P. Cross-family replacements like 24LC04BH require verification of minimum voltage compatibility. Ensure any replacement maintains the same I2C interface protocol and physical footprint if board space is constrained.