24AA32AT-I/SN

Memory IC Overview

The Microchip Technology 24AA32AT-I/SN 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™ standards, supporting maximum clock frequencies of 400 kHz for VCC ≥ 2.5V and 100 kHz for VCC < 2.5V. The device operates on a single supply voltage ranging from 1.7V to 5.5V. Key electrical parameters include a typical active current of 1 mA and standby current of 1 µA. It offers a page write buffer of up to 32 bytes, with a maximum write cycle time of 5 ms. The component is housed in an 8-lead SOIC package and supports industrial temperature ranges.

Memory IC Feature Summary

• Supports bidirectional data transmission via a two-wire serial interface compatible with I2C protocols.
• Includes hardware write protection functionality controlled by the WP pin to inhibit array writes.
• Features Schmitt trigger inputs designed to suppress noise spikes on the SDA and SCL lines.

Memory IC Applications

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

Memory IC Procurement Notes

Verify that the specific ordering suffix corresponds to the required package type and temperature grade. Confirm the voltage range requirements align with the 24AA32A specifications (1.7V to 5.5V). Ensure compatibility with the host controller's I2C pull-up resistor values for the intended operating frequency. Check for any recent Product Change Notifications regarding packaging or assembly site changes.

Memory IC Selection Notes

Select this component when a 32-Kbit EEPROM with I2C interface is required for low-voltage applications down to 1.7V. It is suitable for designs needing hardware write protection and high endurance. Consider the 8-lead SOIC package for surface mount assembly. Verify that the system power supply remains within the specified operational limits to ensure correct clock frequency operation.

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 the 24LC32A, which differs primarily in its minimum operating voltage requirement. These devices are widely used in embedded systems where small amounts of non-volatile data storage are necessary. The 24AA32AT-I/SN specifically denotes the industrial temperature grade and SOIC package variant.

Memory IC Replacement Considerations

The 24LC32AT-I/SN is a functional substitute within the same family, though it requires a minimum supply voltage of 2.5V compared to the 1.7V minimum of the 24AA32A series. Other packages in the 24AA32A family, such as MSOP or TSSOP, may be considered if form factor changes are acceptable.