24LC32AXT-E/ST

Memory IC Overview

The Microchip Technology 24LC32AXT-E/ST is a 32-Kbit Electrically Erasable PROM organized as 4K x 8-bit memory. It operates on a single supply voltage ranging from 2.5V to 5.5V with a maximum clock frequency of 400 kHz. The device features an active read current of up to 400 µA and supports I2C-compatible two-wire serial interface communication. It includes hardware write-protect capabilities, Schmitt trigger inputs for noise suppression, and output slope control to eliminate ground bounce.

Memory IC Feature Summary

• Supports bidirectional data transmission via a two-wire serial interface compatible with standard I2C protocols.
• Includes hardware write protection controlled by the WP pin to inhibit write operations when tied high.
• Features Schmitt trigger inputs on SDA and SCL pins to provide improved noise spike suppression.

Memory IC Applications

• Data logging in industrial environments requiring extended temperature operation
• Configuration storage for microcontroller-based systems
• Parameter storage in automotive electronics

Memory IC Procurement Notes

Verify that the specific ordering suffix corresponds to the TSSOP package and tape-and-reel delivery format. Confirm the 'E' designation indicates the extended temperature range (-40°C to +125°C) and the 'X' prefix denotes the automotive-grade AEC-Q100 qualification status required for your application.

Memory IC Selection Notes

Select this component when an I2C EEPROM with automotive reliability certification is required. Ensure the system voltage remains above 2.5V to support the 400 kHz clock speed. Consider the page write buffer size if optimizing bus throughput for sequential data writes.

Memory IC Part Context

This part belongs to the 24XX32A family of 32-Kbit serial EEPROMs manufactured by Microchip Technology. The family includes variants with different voltage ranges (1.7V–5.5V for 24AA32A and 2.5V–5.5V for 24LC32A) and temperature grades. The 24LC32AXT-E/ST specifically targets applications needing automotive qualification and extended thermal performance.

Memory IC Replacement Considerations

Direct substitutes within the same family include 24LC32AT-E/ST for standard commercial grade or 24LC32AF-E/ST for quarter-array write-protect functionality. Verify package compatibility and voltage specifications before substitution.

Memory IC FAQ

How does the WP pin function?

The WP pin provides hardware write protection. When tied to VCC, write operations are inhibited, but read operations remain unaffected. When tied to VSS, write operations are enabled.

What is the maximum clock frequency?

The maximum clock frequency is 400 kHz when the supply voltage is between 2.5V and 5.5V.