AT49BV002-12JC

Memory IC Overview

The AT49BV002-12JC is a 2-megabit (256K x 8) parallel NOR Flash memory manufactured by Microchip Technology. It operates on a single 3-volt supply with an access time of 120 ns and active current consumption of 50 mA. The device features a sector architecture including a 16K-byte boot block, two 8K-byte parameter blocks, and two main memory blocks. It supports byte-by-byte programming and sector erase operations within the commercial temperature range of 0°C to 70°C.

Memory IC Feature Summary

• Features a dedicated 16K-byte boot block with programmable lockout for secure code protection.
• Supports in-system reprogrammability via standard 5V command sequences without high voltage requirements.
• Includes hardware data protection mechanisms such as VCC sense and noise filtering.
• Provides DATA polling and toggle bit functions for efficient end-of-cycle detection.

Memory IC Applications

• Embedded systems requiring secure boot code storage.
• Industrial control applications needing reliable nonvolatile memory.
• Consumer electronics utilizing parallel flash interfaces.
• Automotive infotainment and instrumentation systems.

Memory IC Procurement Notes

Verify the specific ordering suffix 'JC' corresponds to the 32-lead PLCC package and commercial temperature range. Confirm that the 'BV' designation indicates the 2.7V to 3.6V operating voltage window. Ensure compatibility with existing system voltage levels and interface timing requirements before procurement.

Memory IC Selection Notes

Select this component when a 2-megabit capacity with a 120 ns access speed is required. The PLCC package is suitable for through-hole mounting or specific socketed applications. Consider the boot block lockout feature if system security is a priority. Verify that the parallel interface aligns with the host controller's memory bus capabilities.

Memory IC Part Context

This part belongs to the AT49BV/LV002 family of 3-volt Flash memories. It utilizes advanced CMOS technology for low power dissipation. The device is designed for in-system reprogramming, allowing updates without removal from the circuit board. It serves as a nonvolatile storage solution for microcontroller-based designs.

Memory IC Replacement Considerations

Check for AT49BV002-90JC for faster access times. AT49LV002-12JC offers a narrower voltage range. Verify pinout compatibility with alternative packages like TSOP or VSOP variants within the same memory density family.

Memory IC FAQ

How is the boot block programming lockout feature enabled?

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

What is the function of the RESET pin on this device?

The RESET pin halts current device operations and places outputs in a high-impedance state when held low. Applying 12V to this pin can override the boot block lockout during erase or program cycles.