24AA32AT-E/ST16KVAO

Memory IC Overview

The Microchip Technology 24AA32AT-E/ST16KVAO is a 32-Kbit Electrically Erasable PROM organized as 4K x 8-bit memory. It features a two-wire I2C compatible serial interface with maximum clock frequencies of 400 kHz at VCC ≥ 2.5V and 100 kHz at lower voltages for the 24AA32A variant. The device operates on a single supply ranging from 1.7V to 5.5V, supporting Extended temperature ranges (-40°C to +125°C). Key electrical characteristics include typical standby current of 1 µA and active current up to 3 mA. It offers over 1 million erase/write cycles, data retention exceeding 200 years, and hardware write protection via the WP pin.

Memory IC Feature Summary

• Supports bidirectional two-wire serial communication protocol compatible with standard I2C bus specifications.
• Includes a 32-byte page write buffer to optimize data transfer efficiency during write operations.
• Provides hardware-based write protection through the dedicated WP pin to prevent unintended data modification.
• Features Schmitt trigger inputs for enhanced noise suppression and output slope control to minimize ground bounce.

Memory IC Applications

• Data acquisition systems requiring non-volatile storage for sensor calibration parameters
• Personal communications devices needing low-power configuration memory
• Industrial control applications utilizing I2C bus architectures for device addressing

Memory IC Procurement Notes

Verify that the specific suffix '16KVAO' corresponds to the requested wafer form or special packaging configuration, as standard datasheets typically list tube or reel options. Confirm the voltage range requirements align with the Extended temperature grade specifications. Ensure compatibility with the host controller's I2C pull-up resistor values for the target operating frequency.

Memory IC Selection Notes

Select this component when an I2C interface is required for small capacity non-volatile storage in space-constrained designs. The 8-lead TSSOP package is suitable for surface mount applications. Consider the Extended temperature rating if the operational environment exceeds standard industrial limits. Verify that the system voltage remains within the specified 1.7V to 5.5V range to ensure proper functionality.

Memory IC Part Context

This part belongs to the 24XX32A family of 32-Kbit Serial EEPROMs manufactured by Microchip Technology. The family includes variants such as 24AA32A and 24LC32A, which share similar functional architectures but differ in minimum operating voltage and temperature grades. The 24AA32A series is designed for low-voltage operation down to 1.7V, making it suitable for battery-powered applications.

Memory IC Replacement Considerations

Compatible substitutes within the same family include 24AA32A-I/ST for Industrial temperature range or 24LC32A variants for different voltage thresholds. Cross-referencing with other manufacturers' 32-Kbit I2C EEPROMs requires verification of pinout compatibility and timing specifications.