25AA320AT-I/MS

Memory IC Overview

The Microchip Technology 25AA320AT-I/MS is a 32-Kbit Serial Electrically Erasable PROM featuring SPI-compatible interface. It operates within a supply voltage range of 1.8V to 5.5V and supports a maximum clock frequency of 10 MHz at higher voltages, scaling down to 3 MHz at 1.8V. The device offers a 4096 x 8-bit organization with a 32-byte page size. It functions in an industrial temperature range of -40°C to +85°C and is housed in an 8-lead MSOP package.

Memory IC Feature Summary

• Supports serial communication via standard SPI protocol with separate data input and output lines.
• Includes hardware write protection mechanisms utilizing a dedicated pin and internal status register bits.
• Features self-timed erase and write cycles that operate independently after initiation.
• Provides hold functionality to pause serial transmission without resetting the sequence.

Memory IC Applications

• Data storage for configuration parameters in microcontroller systems
• Logging operational history or event records
• Storing calibration constants and device identifiers

Memory IC Procurement Notes

Verify the specific suffix 'I' confirms the industrial temperature grade (-40°C to +85°C) and 'MS' denotes the 8-lead MSOP package. Confirm RoHS compliance status as required by project specifications. Ensure the ordering quantity matches the manufacturer's standard packaging options available for this specific part number variant.

Memory IC Selection Notes

Select this component when a non-volatile memory solution requires low power consumption and simple serial interfacing. It is suitable for applications needing moderate storage density with robust write protection features. Consider the voltage range compatibility with the host system logic levels before integration.

Memory IC Part Context

This device belongs to the 25XX320A family of serial EEPROMs from Microchip Technology. It shares functional similarities with the 25LC320A but differs in minimum operating voltage requirements. The family is designed for general-purpose data storage in embedded systems requiring reliable non-volatile retention.

Memory IC Replacement Considerations

The 25LC320A serves as a direct functional alternative within the same datasheet specification, though it requires a minimum supply voltage of 2.5V compared to the 1.8V minimum of the 25AA320A series.