24LC32AT-E/OT

Memory IC Overview

The Microchip Technology 24LC32AT-E/OT is a 32-Kbit Electrically Erasable PROM (EEPROM) organized as a single block of 4K x 8-bit memory. It features a two-wire serial interface compatible with I²C™ protocols, supporting clock frequencies up to 400 kHz at VCC levels between 2.5V and 5.5V. The device operates within an extended temperature range of -40°C to +125°C and utilizes an 8-lead OT package.

Memory IC Feature Summary

• Supports bidirectional data transfer via a standard two-wire serial bus protocol
• Includes hardware write protection through the WP pin for array security
• Features Schmitt trigger inputs on SDA and SCL pins for noise suppression
• Provides self-timed erase/write cycles with internal address pointer management

Memory IC Applications

• Data acquisition systems requiring non-volatile storage
• Personal communication devices utilizing low-power interfaces
• Industrial control applications operating in extended temperature environments
• Embedded systems managing configuration parameters or calibration data

Memory IC Procurement Notes

Verify that the specific ordering suffix 'E' corresponds to the Extended temperature grade (-40°C to +125°C) and 'OT' denotes the correct surface mount package variant. Confirm voltage requirements align with the 2.5V minimum specification for the LC series. Ensure compatibility with the host controller's I²C pull-up resistor values for reliable signal integrity at 400 kHz operation.

Memory IC Selection Notes

Select this component when application requirements demand extended industrial temperature stability alongside standard I²C connectivity. The 24LC32A series is distinct from the 24AA32A due to its higher minimum operating voltage of 2.5V. Consider the page write buffer capability for efficient bulk data transfers and verify that the physical footprint matches the available PCB space for the specified package type.

Memory IC Part Context

This device belongs to the 24XX32A family of serial EEPROMs manufactured by Microchip Technology. The family shares common architectural features including a 32-Kbit capacity and I²C interface but varies by voltage range and temperature rating. The 24LC32A specifically targets applications requiring operation down to 2.5V, distinguishing it from the lower-voltage 24AA32A counterpart.

Memory IC Replacement Considerations

Direct substitutes include other 24LC32A variants with different package options such as MSOP, SOIC, or PDIP, provided they meet the same electrical and thermal specifications. Cross-referencing with the 24AA32A series requires verifying voltage level compatibility, as the AA series supports lower voltages.