The D4164C-15 is a 64K Dynamic Random Access Memory (DRAM) chip manufactured by NEC. This component is an integral part of various memory systems requiring high-density storage and rapid data access. It's designed for applications where efficient memory management and low power consumption are crucial.

Applications

• Memory modules for early personal computers.
• Graphics cards requiring on-board memory.
• Industrial control systems where data logging and retrieval are necessary.
• Telecommunications equipment for buffering and temporary storage.
• Instrumentation equipment needing data acquisition and processing capabilities.

Features

• 64Kbit capacity: Allows storage of 65,536 bits of data.
• Access time of 150ns: Enables quick read and write operations.
• Single 5V power supply: Simplifies power supply design and reduces system complexity.
• TTL compatible inputs and outputs: Ensures easy interfacing with other digital logic circuits.
• Refresh cycle: Requires periodic refresh cycles to retain data.

Benefits

• High density storage: Provides a large amount of memory in a single chip.
• Fast access time: Enhances system performance through quick data retrieval.
• Easy integration: Compatible with standard TTL logic, simplifying circuit design.
• Reduced power consumption: Contributes to energy-efficient system operation.
• Cost-effective solution: Provides a balance between performance and cost.

Additional Details

The D4164C-15 utilizes multiplexed address inputs to reduce the number of address pins required. It operates with a single +5V power supply and features a refresh cycle, typically requiring a refresh of all 128 rows every 2ms. The chip is typically packaged in a 16-pin DIP (Dual In-line Package). Its reliable performance made it a popular choice for memory applications during its era.