25AA040AT-I/MNY

Memory IC Overview

The Microchip Technology 25AA040AT-I/MNY is a 4 Kbit Serial Electrically Erasable Programmable Read-Only Memory (EEPROM) utilizing a SPI-compatible serial bus. It features a 512 x 8-bit organization with a maximum clock frequency of 10 MHz and operates within a supply voltage range of 1.8V to 5.5V. The device supports industrial temperature ranges from -40°C to +85°C and includes block write protection, self-timed erase/write cycles, and high reliability specifications.

Memory IC Feature Summary

• Supports sequential read operations and page write mode for up to 16 bytes per cycle.
• Includes built-in hardware write protection via the WP pin and software-configurable block protection levels.
• Features power-on/off data protection circuitry and a write enable latch to prevent inadvertent writes.

Memory IC Applications

• Microcontroller system configuration storage
• Calibration data retention in embedded devices
• Parameter logging in industrial monitoring systems

Memory IC Procurement Notes

Verify the specific suffix 'I/MNY' corresponds to the Industrial temperature grade (-40°C to +85°C) and TDFN-8 package type. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure voltage requirements align with the 1.8V to 5.5V operational range specified for this variant.

Memory IC Selection Notes

Select this component when a low-pin-count EEPROM with SPI interface is required for space-constrained designs. The TDFN-8 package offers a compact footprint suitable for surface-mount applications. Consider the 1.8V minimum operating voltage for compatibility with low-voltage logic families compared to higher-voltage alternatives.

Memory IC Part Context

This part belongs to the 25XX040A family of 4 Kbit Serial EEPROMs from Microchip Technology. It shares functional similarities with the 25LC040A but differs in its lower minimum operating voltage specification. The family provides non-volatile memory solutions for various consumer and industrial electronic applications requiring reliable data storage.

Memory IC Replacement Considerations

Direct substitutes include other 25AA040 variants with identical electrical characteristics and pinouts, such as 25AA040AT-I/MS or 25AA040AT-I/SN, provided the package type matches the design constraints. Verify that any replacement maintains the same industrial temperature rating and SPI protocol compatibility.