The MT4C4256DJ-8 is a 256K x 4-bit Dynamic Random-Access Memory (DRAM) chip manufactured by Micron Technology Inc. This DRAM is designed for applications requiring high-density memory and fast access times. It is commonly used in computer memory modules, graphics cards, and embedded systems. The MT4C4256DJ-8 features a page-mode operation, allowing for faster access to data within the same memory page. It also incorporates refresh circuitry to maintain data integrity.

Applications

• Computer Memory Modules: Used in SIMMs (Single In-line Memory Modules) and DIMMs (Dual In-line Memory Modules) for personal computers.
• Graphics Cards: Employed as memory in graphics cards for storing textures and frame buffers.
• Embedded Systems: Integrated into embedded systems requiring high-density memory.
• Data Acquisition Systems: Utilized in data acquisition systems for temporary data storage.

Features

• High-Density Memory: Provides a memory capacity of 256K words, each 4 bits wide.
• Fast Access Time: Offers fast access times, typically around 80 nanoseconds.
• Page-Mode Operation: Allows for faster access to data within the same memory page.
• Refresh Circuitry: Incorporates refresh circuitry to maintain data integrity.
• TTL-Compatible Inputs and Outputs: Compatible with standard TTL logic levels.

Benefits

• Increased System Performance: Enhances system performance with high-density memory and fast access times.
• Reduced Memory Costs: Reduces memory costs by providing a compact and efficient memory solution.
• Simplified System Design: Simplifies system design with its TTL-compatible interface.
• Reliable Data Storage: Ensures reliable data storage with its refresh circuitry.

Additional Details

The MT4C4256DJ-8 operates from a single 5V power supply. It features separate data input and output pins, allowing for bidirectional data transfer. The device is typically available in a DIP (Dual In-line Package) or SOJ (Small Outline J-lead) package. Key electrical characteristics include access time, cycle time, refresh rate, and power consumption. The MT4C4256DJ-8 is designed for high reliability and is subjected to rigorous testing to ensure consistent performance. Its combination of high density, fast access time, and reliable data storage makes it a popular choice for various memory applications.