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The M5M5258DP-15 is a DRAM (Dynamic Random-Access Memory) chip manufactured by Mitsubishi Electric (MIT). Below are the key specifications, descriptions, and features:

Specifications:

• Manufacturer: Mitsubishi Electric (MIT)
• Part Number: M5M5258DP-15
• Type: DRAM (Dynamic RAM)
• Density: 256K x 1 bit (256Kb)
• Organization: 262,144 words × 1 bit
• Speed: 150 ns (15 ns access time)
• Voltage Supply: +5V (Single Supply)
• Package: 16-pin DIP (Dual In-line Package)
• Operating Temperature Range: Commercial (0°C to +70°C)

Descriptions:

• The M5M5258DP-15 is a high-speed, low-power DRAM chip designed for use in early computer systems and embedded applications.
• It features a 256Kb (256K × 1-bit) configuration, making it suitable for memory expansion in legacy systems.
• The 150 ns access time ensures reliable performance in synchronous memory applications.

Features:

• Fast Access Time: 150 ns (15 ns speed grade)
• Low Power Consumption: Optimized for efficiency in older computing systems.
• Single +5V Power Supply: Simplifies integration into 5V-based systems.
• Standard 16-pin DIP Package: Compatible with legacy PCB designs.
• RAS-Only Refresh: Supports simplified refresh cycles.

This DRAM chip was commonly used in 1980s and early 1990s computer systems, arcade boards, and industrial control systems.

Would you like additional details on pin configuration or timing diagrams?