AT49LV002T-12VC

Memory IC Overview

The AT49LV002T-12VC is a 3-volt-only in-system reprogrammable Flash Memory with a capacity of 2 megabits organized as 262,144 words by 8 bits. It features a fast read access time of 120 ns and operates within a voltage range of 3.0V to 3.6V. The device 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 typical hardware data protection and DATA polling for end-of-program detection.

Memory IC Feature Summary

• Sector architecture includes a 16K-byte boot block with optional programming lockout for secure code storage.
• Internal program control and timer manage erase and write cycles without external clocks.
• Hardware data protection prevents inadvertent programming through VCC sense and noise filtering.

Memory IC Applications

• In-system reprogrammable nonvolatile storage
• Secure boot code storage with lockout capabilities
• Parameter block data retention

Memory IC Procurement Notes

Verify the specific suffix 'VC' corresponds to the 32-Lead Thin Small Outline Package (VSOP) variant as defined in the official Microchip ordering information tables. Confirm that the component meets the required commercial temperature range specifications before integration into the design.

Memory IC Selection Notes

Select this component when a single 3.0V to 3.6V supply is available for both reading and writing operations. Ensure the system requires a 120 ns access time and benefits from the specific sector layout including a protected boot block area for firmware integrity.

Memory IC Part Context

This part belongs to the AT49BV/LV002 family of 3-volt Flash memories manufactured using advanced nonvolatile CMOS technology. The 'LV' designation indicates operation at lower voltages compared to standard 5-volt devices, while the 'T' suffix denotes the TSOP/VSOP package style.

Memory IC Replacement Considerations

AT49LV002T-12VI

Memory IC FAQ

How is the boot block programming lockout feature enabled?

The lockout feature is enabled by executing a specific six-command software sequence to designated addresses. Once activated, the boot block cannot be erased or programmed with input voltages of 5.5 volts or less.

What method detects the end of a program cycle?

The device supports DATA polling, where reading the last loaded byte yields its complement during programming. Alternatively, the Toggle Bit on I/O6 toggles during operations and stops once the cycle completes.