AT49LV002-12VI

Memory IC Overview

The AT49LV002-12VI is a 2-megabit (256K x 8) parallel Flash memory device manufactured by Microchip Technology. It operates on a single 3.0V to 3.6V supply and features a 120ns access time. The component utilizes a sector architecture comprising one 16K-byte boot block, two 8K-byte parameter blocks, and two main memory blocks. It supports byte-by-byte programming with internal timers and hardware data protection mechanisms.

Memory IC Feature Summary

• Sector-based architecture with dedicated boot block for secure code storage
• Internal program control and timer for automated erase and write cycles
• Hardware data protection against inadvertent programming
• DATA polling and toggle bit capabilities for cycle status detection

Memory IC Applications

• In-system reprogrammable non-volatile storage
• Secure boot code storage with lockout features
• Parameter data storage in industrial systems
• Main memory block applications requiring low power standby

Memory IC Procurement Notes

Verify the specific package type and temperature range corresponding to the VI suffix. Confirm current availability status as this part may be discontinued or subject to limited supply. Ensure compatibility with existing system voltage levels and interface requirements before procurement.

Memory IC Selection Notes

Select this component for designs requiring 3-volt operation and parallel interface connectivity. Consider the sector organization for applications needing distinct regions for boot code and user data. Verify that the 120ns access speed meets system timing constraints.

Memory IC Part Context

This device belongs to the AT49LV002 family of 3-volt Flash memories. It is designed for in-system reprogramming without requiring high voltage inputs. The LV designation indicates a lower voltage operating range compared to BV variants.

Memory IC Replacement Considerations

AT49LV002-12VC

Memory IC FAQ

How is the end of a program cycle detected?

The device supports DATA polling, where reading the last loaded byte yields its complement during programming, and the Toggle Bit feature, where I/O6 toggles until the cycle completes.

What is the function of the Boot Block Programming Lockout?

It prevents programming or erasing of the 16K-byte boot block once enabled, ensuring data integrity for secure system code while allowing updates to other memory sectors.