The GM71C256-10 is a 256K x 1-bit Dynamic Random Access Memory (DRAM) chip manufactured by LG. It is designed for high-speed data storage and retrieval in a variety of electronic systems. The '-10' suffix typically indicates the access time of the memory, in this case, 100ns. This DRAM chip is used in applications requiring relatively small amounts of fast memory, such as embedded systems, graphics cards, and older computer systems.

Applications

• Embedded Systems: Used as main memory in embedded systems requiring limited RAM.
• Graphics Cards: Employed as video RAM in older graphics cards.
• Computer Memory: Served as system RAM in older personal computers and workstations.
• Industrial Control Systems: Providing temporary data storage in industrial automation equipment.
• Test and Measurement Equipment: Used in instruments requiring temporary data buffering.

Features

• 256K x 1-bit Organization: Stores 262,144 bits of data, organized as 256K words of 1 bit each.
• 100ns Access Time: Provides fast data access with a typical access time of 100 nanoseconds.
• Single 5V Power Supply: Operates from a single 5V power supply.
• TTL Compatible Inputs and Outputs: Compatible with TTL logic levels.
• Multiplexed Address Inputs: Uses multiplexed address inputs to reduce pin count.
• Refresh Operation: Requires periodic refresh cycles to retain data.
• DIP Package: Typically available in a Dual In-Line Package (DIP) for through-hole mounting.

Benefits

• Fast Data Access: 100ns access time enables high-speed data storage and retrieval.
• Easy to Use: TTL compatible inputs and outputs simplify interfacing with other logic devices.
• Compact Size: DIP package allows for easy integration into a variety of systems.
• Low Cost: Generally a low-cost solution for small-scale memory applications.

Additional Details

The GM71C256-10 DRAM chip requires periodic refresh cycles to maintain the stored data. The refresh operation involves reading and writing data to each memory location at regular intervals. The chip utilizes multiplexed address inputs, which means that the row and column addresses are supplied on the same pins, reducing the overall pin count. The timing requirements for the refresh operation and address multiplexing are typically specified in the product datasheet. The GM71C256-10 provides a reliable and cost-effective solution for applications requiring a small amount of fast DRAM memory.