24AA128-I/P

Memory IC Overview

The Microchip Technology 24AA128-I/P is a 16K x 8 (128 Kbit) Serial Electrically Erasable PROM (EEPROM). It operates with a supply voltage range of 1.7V to 5.5V and supports a maximum clock frequency of 400 kHz via a Two-Wire Serial Interface compatible with I2C. The device features a 64-byte page write buffer, hardware write-protect capability, and Schmitt trigger inputs for noise suppression. It is housed in an 8-Lead PDIP package and is rated for industrial temperature operation from -40°C to +85°C.

Memory IC Feature Summary

• Supports cascading up to eight devices on the same bus using configurable chip address inputs.
• Includes hardware write-protect functionality to inhibit array writes when the WP pin is tied high.
• Features output slope control designed to eliminate ground bounce during operation.

Memory IC Applications

• Personal communications systems
• Data acquisition applications
• Low-power embedded memory storage

Memory IC Procurement Notes

Verify that the ordering suffix matches the required package type and temperature grade. Confirm the specific voltage range requirements align with the 1.7V to 5.5V specification. Ensure the I2C bus pull-up resistor values are appropriate for the 400 kHz maximum clock frequency. Check for RoHS compliance status if required by the manufacturing process.

Memory IC Selection Notes

Select this component for designs requiring low standby current and broad voltage compatibility. The industrial temperature range suits general-purpose electronic equipment. Consider the PDIP package for through-hole prototyping or assembly constraints. Verify that the 400 kHz speed meets the system timing requirements at the lowest operating voltage.

Memory IC Part Context

This part belongs to the 24XX128 family of serial EEPROMs manufactured by Microchip Technology. The 'I' designation indicates the Industrial temperature range variant. The '/P' suffix specifies the 8-Lead Plastic Dual In-line Package. It shares functional similarities with the 24LC128 and 24FC128 but differs in minimum voltage and clock speed specifications.

Memory IC Replacement Considerations

The 24LC128-I/P serves as a direct physical replacement, though it requires a minimum supply voltage of 2.5V instead of 1.7V. Designers must ensure the system voltage remains above 2.5V when substituting this part. Other electrical characteristics remain largely consistent between the two variants.