24AA128T-I/SN

Memory IC Overview

The Microchip Technology 24AA128T-I/SN is a 16K x 8 (128 Kbit) Serial Electrically Erasable PROM (EEPROM). It operates on a single supply voltage ranging from 1.7V to 5.5V and supports a maximum clock frequency of 400 kHz. The device utilizes an I2C compatible two-wire serial interface and features a 64-byte page write buffer with a maximum write cycle time of 5 ms. It is housed in an 8-lead SOIC package and is rated for industrial temperature operation between -40°C and +85°C.

Memory IC Feature Summary

• Low-power CMOS technology designed for advanced applications requiring minimal current consumption.
• Hardware write-protect capability via the WP pin to inhibit array writes when tied high.
• Schmitt trigger inputs provide noise suppression and output slope control eliminates ground bounce.
• Supports cascading up to eight devices on the same bus using configurable chip select inputs.

Memory IC Applications

• Personal communications systems
• Data acquisition modules
• Industrial control environments

Memory IC Procurement Notes

Verify that the ordering suffix 'SN' corresponds to the 8-lead SOIC package type. Confirm the 'I' designation indicates the industrial temperature range of -40°C to +85°C. Ensure the 'T' suffix matches the required reel or cut tape packaging format. Cross-reference the full part number against official Microchip documentation to validate specifications before integration.

Memory IC Selection Notes

Select this component for designs requiring low-voltage operation down to 1.7V. It is suitable for applications needing hardware write protection and high endurance. Consider the 400 kHz speed limit at voltages below 2.5V. Verify compatibility with existing I2C bus architectures and ensure adequate pull-up resistors are included in the schematic design.

Memory IC Part Context

This device belongs to the 24XX128 family, which includes variants like the 24LC128 and 24FC128. These parts share similar memory organization and interface protocols but differ in operating voltage ranges and maximum clock frequencies. The 24AA128 specifically targets low-voltage applications compared to other family members.

Memory IC Replacement Considerations

Compatible substitutes within the same family include the 24LC128 and 24FC128. Note that the 24LC128 requires a minimum supply voltage of 2.5V, while the 24FC128 supports higher clock speeds. Verify package and temperature grade compatibility when substituting.