24LC32AT-E/ST

Memory IC Overview

The Microchip Technology 24LC32AT-E/ST is a 32-Kbit Electrically Erasable PROM organized as a single block of 4K x 8-bit memory. It operates with a supply voltage range of 2.5V to 5.5V and supports I²C compatible two-wire serial interfaces at clock frequencies up to 400 kHz. The device features a 900 ns access time, a maximum page write time of 5 ms, and an 8-lead TSSOP package. It is rated for industrial temperature ranges from -40°C to +125°C.

Memory IC Feature Summary

• Supports bidirectional two-wire serial interface with Schmitt trigger inputs for noise suppression
• Includes hardware write-protect capability via the WP pin to inhibit write operations
• Features a 32-byte page write buffer for efficient data storage operations
• Provides high reliability with over one million erase/write cycles and data retention exceeding 200 years

Memory IC Applications

• Personal communications devices requiring low-power non-volatile storage
• Data acquisition systems needing reliable parameter retention
• Industrial control applications operating within extended temperature ranges

Memory IC Procurement Notes

Verify that the ordering suffix 'E' confirms the Extended temperature range specification (-40°C to +125°C) and 'ST' indicates the 8-lead TSSOP package. Confirm the 'I' in the base model corresponds to the Industrial grade rating if applicable to your specific variant requirements. Ensure compatibility with the 2.5V minimum supply voltage constraint for the LC series before procurement.

Memory IC Selection Notes

Select this component when an I²C compatible EEPROM with extended temperature capabilities is required. The 24LC32A series is distinct from the 24AA32A due to its higher minimum operating voltage of 2.5V compared to 1.7V. Consider the 32-byte page write buffer size for optimizing write throughput in applications involving frequent small data updates.

Memory IC Part Context

This part belongs to the 24XX32A family of 32-Kbit Serial EEPROMs manufactured by Microchip Technology. The family includes variants like 24AA32A and 24LC32A, differentiated primarily by operating voltage ranges and temperature grades. The 24LC32A specifically targets applications requiring operation down to 2.5V, distinguishing it from the lower-voltage 24AA32A series.

Memory IC Replacement Considerations

Public confirmed substitute part numbers include 24LC32AT-I/MS and 24LC32AT-E/SN. Verify package compatibility (TSSOP vs MSOP/SOIC) and temperature range specifications when substituting.