25AA640AT-I/MS16KVAO

Memory IC Overview

The Microchip Technology 25AA640AT-I/MS16KVAO is a 64-Kbit serial Electrically Erasable PROM accessed via an SPI-compatible bus. It features an 8192 x 8-bit organization with a 32-byte page size and supports clock frequencies up to 10 MHz. The device operates within a voltage range of 1.8V to 5.5V and is qualified for automotive applications under AEC-Q100 standards. It offers industrial temperature coverage from -40°C to +85°C, housed in an 8-lead MSOP package.

Memory IC Feature Summary

• Supports block write protection allowing selective array segment locking
• Includes built-in power-on/off data protection circuitry
• Features a hold pin to pause serial communication without resetting the sequence

Memory IC Applications

• Automotive embedded systems requiring AEC-Q100 qualification
• Industrial control units needing non-volatile data storage
• Microcontroller-based designs utilizing standard SPI interfaces

Memory IC Procurement Notes

Verify the specific suffix '16KVAO' against official Microchip documentation to confirm its exact meaning regarding wafer form or customer-specific marking. Ensure the Industrial temperature grade (I) matches your environmental requirements. Confirm RoHS compliance status directly with the manufacturer as specifications may update.

Memory IC Selection Notes

Select this component when a 64-Kbit capacity is required with SPI interface compatibility. The Industrial temperature range (-40°C to +85°C) suits most general electronic environments. Consider the 8-lead MSOP package for space-constrained surface-mount designs. Verify that the 1.8V to 5.5V supply range aligns with your system's power architecture.

Memory IC Part Context

This part belongs to the 25AA640A family of 64-Kbit serial EEPROMs manufactured by Microchip Technology. It shares core electrical characteristics with the 25LC640A variant, differing primarily in operating voltage ranges. The series is designed for low-power applications requiring high reliability and long data retention periods.

Memory IC Replacement Considerations

The 25LC640A is a functional equivalent within the same datasheet, though it requires a minimum supply voltage of 2.5V compared to the 25AA640A's 1.8V minimum.