25AA320AT-I/MNY

Memory IC Overview

The Microchip Technology 25AA320AT-I/MNY is a 32-Kbit Serial Electrically Erasable PROM featuring a 4096 x 8-bit organization. It operates via an SPI-compatible serial bus with a maximum clock frequency of 10 MHz at VCC levels between 4.5V and 5.5V, scaling to 5 MHz at 2.5V–4.5V and 3 MHz at 1.8V–2.5V. The device supports a supply voltage range of 1.8V to 5.5V and functions within an industrial temperature range of -40°C to +85°C. It utilizes an 8-lead TDFN (2x3) package.

Memory IC Feature Summary

• Supports sequential read operations with automatic address pointer incrementation across the memory array.
• Includes hardware write protection controlled by the WP pin and STATUS register bits for selective block protection.
• Features a HOLD input pin that suspends serial communication without resetting the current sequence state.

Memory IC Applications

• Data logging in microcontroller-based systems
• Configuration storage for embedded devices
• Parameter retention in industrial control units

Memory IC Procurement Notes

Verify the specific suffix 'MNY' corresponds to the 8-lead TDFN package variant when sourcing. Confirm the 'I' designation matches the required -40°C to +85°C industrial temperature rating. Ensure the system voltage supports the 1.8V minimum operating requirement specified for the 25AA320A series.

Memory IC Selection Notes

Select this component for applications requiring non-volatile data retention with low power consumption. The 32-byte page size allows efficient bulk writes compared to byte-only programming. Consider the TDFN package dimensions for space-constrained PCB layouts where surface mount technology is preferred over through-hole options.

Memory IC Part Context

This part belongs to the 25XX320A family of 32-Kbit SPI EEPROMs manufactured by Microchip Technology. It shares functional compatibility with the 25LC320A, though voltage ranges differ. The family is designed for direct interface with popular microcontroller families, including PIC microcontrollers, utilizing standard SPI protocols.

Memory IC Replacement Considerations

Public confirmed substitute part numbers include 25AA320A-I/MS and 25AA320A-I/ST. Verify package compatibility when substituting MSOP or SOIC variants for the TDFN form factor.