24LC32AX-E/ST

Memory IC Overview

The Microchip Technology 24LC32AX-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 100 kHz and 400 kHz. The device operates on a single supply voltage ranging from 2.5V to 5.5V. It includes hardware write-protect capabilities via the WP pin and supports page write operations with a buffer for up to 32 bytes. The component is qualified under AEC-Q100 standards and offers data retention exceeding 200 years with over one million erase/write cycles.

Memory IC Feature Summary

• Supports bidirectional two-wire serial communication with I2C compatibility
• Includes hardware write-protect functionality controlled by the WP pin
• Features Schmitt trigger inputs for enhanced noise suppression
• Provides output slope control to eliminate ground bounce effects

Memory IC Applications

• Personal communications devices requiring low-power non-volatile storage
• Data acquisition systems needing reliable parameter retention
• Automotive electronic modules requiring AEC-Q100 qualification
• Industrial control systems utilizing I2C bus architectures

Memory IC Procurement Notes

Verify that the ordering suffix 'X' corresponds to the specific package variant required, such as TSSOP or X-Rotated TSSOP, as defined in the manufacturer's Device Selection Table. Confirm the temperature range designation 'E' aligns with extended industrial specifications (-40°C to +125°C). Ensure the voltage range matches the 2.5V to 5.5V requirement for the 24LC32A series. Cross-reference the part number with official Microchip documentation to confirm current production status and compliance with RoHS directives.

Memory IC Selection Notes

Select this component when an I2C-compatible EEPROM with automotive qualification is required. The 24LC32A series is distinguished from the 24AA32A by its minimum operating voltage of 2.5V compared to 1.7V. Consider the 32-byte page write buffer for efficient data writing. Ensure the application can accommodate the hardware write-protect pin logic levels. Verify that the system bus speed supports the specified 100 kHz and 400 kHz clock frequencies.

Memory IC Part Context

This device belongs to the 24XX32A family of 32-Kbit Serial EEPROMs manufactured by Microchip Technology. The family shares common architectural features including a 4K x 8 memory organization and I2C interface. Variants within the family differ primarily in operating voltage ranges (1.7V vs 2.5V minimum), temperature ratings, and physical package types. The 24LC32A specifically targets applications requiring operation down to 2.5V.

Memory IC Replacement Considerations

Direct substitutes include other 24LC32A variants with different packages, such as 24LC32A-I/SN or 24LC32A-E/P, provided the pinout and electrical characteristics match. Equivalent parts from other manufacturers must be verified for I2C compatibility, voltage range, and memory organization.