24LC32A-E/ST

Memory IC Overview

The Microchip Technology 24LC32A-E/ST 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 maximum clock frequencies of 400 kHz for supply voltages 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 TSSOP surface-mount package.

Memory IC Feature Summary

• Supports page write operations with a 32-byte buffer to enhance bus throughput efficiency.
• Includes hardware write protection via the WP pin to inhibit array modifications when tied high.
• Features Schmitt trigger inputs on SDA and SCL lines to suppress noise spikes and improve signal integrity.

Memory IC Applications

• Data acquisition systems requiring non-volatile storage in industrial environments
• Personal communication devices utilizing low-power memory solutions
• Embedded controllers needing multiple addressable devices on a shared I2C bus

Memory IC Procurement Notes

Verify that the specific ordering suffix corresponds to the Extended temperature grade (-40°C to +125°C) and the TSSOP package type. Confirm RoHS compliance status and ensure the voltage range requirements align with the 2.5V minimum specification for the LC series variant before finalizing procurement orders.

Memory IC Selection Notes

Select this component when extended temperature operation is required alongside standard I2C compatibility. Ensure the system design accommodates the 2.5V minimum supply voltage constraint inherent to the 24LC32A series. Consider the 32-byte page write buffer size when designing software routines to prevent data loss during boundary crossings.

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 and temperature grades, such as the 24AA32A which supports lower voltages down to 1.7V. The 24LC32A specifically targets applications requiring robust performance at higher operating temperatures.

Memory IC Replacement Considerations

Public confirmed substitute part numbers: 24LC32AT-I/ST, 24LC32AF-E/ST, 24LC32A-E/SN, 24LC32A-E/P, 24LC32A-E/MS, 24LC32A-E/SM, 24LC32A-E/OT, 24LC32A-E/MNY, 24LC32A-E/X/ST, 24LC32A-E/DFN, 24LC32A-E/TDFN, 24LC32A-E/SOIJ.