The MBM2764 is a 64K (8K x 8) EPROM (Erasable Programmable Read-Only Memory) manufactured by Fujitsu Electronics America, Inc. This EPROM is a non-volatile memory device that can be electrically programmed and erased using ultraviolet (UV) light. It's commonly used for storing firmware, boot code, and other fixed data in embedded systems and electronic devices.

Applications:

• Embedded systems
• Microcontroller firmware storage
• Boot code storage
• Game cartridges
• Industrial control systems

Features:

• 64K (8K x 8) memory organization: Provides a storage capacity of 64 kilobits, organized as 8,192 bytes.
• EPROM technology: Electrically programmable and UV erasable.
• Non-volatile storage: Data is retained even when power is removed.
• TTL compatible inputs and outputs: Interfaces easily with TTL logic circuits.
• Fast access time: Offers relatively quick data retrieval.
• Three-state outputs: Allows for bus sharing in memory systems.

Benefits:

• Non-Volatile Data Storage: Retains data even when power is off, making it suitable for storing critical firmware and boot code.
• Reprogrammability: Can be erased and reprogrammed using UV light, allowing for updates and modifications.
• Easy Integration: TTL compatible inputs and outputs simplify interfacing with other logic devices.
• Versatile Application: Suitable for a wide range of embedded systems and electronic devices.
• Reliable Performance: Provides reliable data storage and retrieval in various operating conditions.

Additional Details:

The MBM2764 is typically packaged in a 28-pin DIP (Dual In-line Package). It requires a UV eraser for erasing the stored data, which involves exposing the die (visible through a quartz window on the top of the package) to UV light for a specified duration. The programming process involves applying specific voltage levels to the address and data lines. The access time of the MBM2764 varies depending on the specific version, but it typically ranges from 200ns to 450ns. EPROMs like the MBM2764 were commonly used in older embedded systems before being largely replaced by EEPROMs and flash memory, which offer electrical erasure capabilities and higher storage densities.