24AA32A-I/SN

Memory IC Overview

The Microchip Technology 24AA32A-I/SN is a 32-Kbit Electrically Erasable PROM 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 for VCC ≥ 2.5V and 100 kHz for lower voltages. The device operates on a single supply ranging from 1.7V to 5.5V, with typical standby current of 1 µA and active current of 1 mA. It includes hardware write protection, Schmitt trigger inputs for noise suppression, and output slope control. The Industrial temperature range (-40°C to +85°C) is supported in an 8-lead SOIC package.

Memory IC Feature Summary

• Supports bidirectional data transfer via a two-wire serial bus protocol with I2C compatibility.
• Includes a 32-byte page write buffer to facilitate efficient data storage operations.
• Provides hardware write protection through the WP pin to secure array data integrity.

Memory IC Applications

• Personal communications devices requiring low-power non-volatile storage
• Data acquisition systems needing reliable parameter retention
• Industrial control applications utilizing I2C communication buses

Memory IC Procurement Notes

Verify that the ordering suffix matches the required package type and temperature grade. Confirm voltage specifications align with system requirements, noting the 1.7V minimum for this specific part number. Ensure compliance with RoHS standards if applicable to your manufacturing process. Cross-reference the manufacturer part number against official datasheets to confirm functional equivalence before integration.

Memory IC Selection Notes

Select this component when operating voltages drop below 2.5V, as it supports operation down to 1.7V unlike the 24LC32A variant. Choose the Industrial temperature rating for environments between -40°C and +85°C. Consider the 8-lead SOIC package for surface mount assembly needs. Evaluate the need for hardware write protection and page write capabilities for your specific data management strategy.

Memory IC Part Context

This device belongs to the 24XX32A family of 32-Kbit serial EEPROMs manufactured by Microchip Technology. It shares architectural similarities with the 24LC32A but differs in minimum operating voltage. The family utilizes a standardized I2C interface and offers multiple package options including PDIP, SOIC, TSSOP, and DFN variants to accommodate diverse PCB layout constraints.

Memory IC Replacement Considerations

The 24LC32A serves as a functional alternative within the same family, though it requires a minimum supply voltage of 2.5V compared to the 1.7V support of the 24AA32A. Verify voltage headroom and temperature ratings when substituting. Other package variations such as MSOP or TSSOP may be used if pin compatibility and physical dimensions are acceptable.