25AA020AT-I/MNY

Memory IC Overview

The Microchip Technology 25AA020AT-I/MNY is a 2 Kbit (256 x 8-bit) Serial Electrically Erasable Programmable Read-Only Memory (EEPROM). It operates with a supply voltage range of 1.8 V to 5.5 V and supports a maximum clock frequency of 10 MHz via an SPI-compatible serial bus. The device features low-power CMOS technology, offering a standby current of 5 µA at 5.5 V. It includes self-timed erase and write cycles with a maximum duration of 5 ms.

Memory IC Feature Summary

• Supports sequential read operations and page write mode for up to 16 bytes within a single physical page boundary.
• Includes built-in hardware write protection via the WP pin and software-controlled block protection for none, 1/4, 1/2, or all of the memory array.
• Features a HOLD input that allows suspension of serial communication without resetting the sequence, facilitating higher priority interrupt servicing.

Memory IC Applications

• Data storage in microcontroller systems requiring non-volatile memory
• Configuration parameter retention in industrial control devices
• Calibration data storage in sensor interfaces

Memory IC Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and temperature grade. Ensure compatibility with system voltage levels, as the 'I' suffix denotes Industrial temperature range (-40°C to +85°C) and 1.8V minimum operation. Confirm RoHS compliance status through manufacturer datasheets prior to integration.

Memory IC Selection Notes

Select this component when a compact 2 Kbit EEPROM with SPI interface is required for low-power applications. It is suitable for designs needing hardware write protection and page write capabilities. Verify that the host controller supports the necessary SPI modes and that the operating voltage aligns with the 1.8 V to 5.5 V specification.

Memory IC Part Context

This part belongs to the 25XX020A family of Serial EEPROMs from Microchip Technology. It shares functional similarities with the 25LC020A but differs in its lower minimum operating voltage of 1.8 V compared to the 2.5 V minimum of the LC variant. Both variants utilize identical instruction sets and pin configurations.

Memory IC Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Cross-referencing with other manufacturers requires independent verification of electrical characteristics and pinouts.