The MT4C4256DJ-7 is a 256K x 4-bit Dynamic Random-Access Memory (DRAM) chip manufactured by Micron Technology Inc. This DRAM chip provides a cost-effective solution for memory requirements in a wide array of applications. It is known for its reliable data storage and relatively low power consumption.

Applications:

• Embedded systems: Microcontrollers, single-board computers, and industrial control systems.
• Graphics cards: Frame buffers and texture memory.
• Printers: Buffer memory.
• Networking equipment: Routers, switches, and modems.
• Consumer electronics: Set-top boxes, digital TVs, and gaming consoles (legacy).

Features:

• Organization: 256K x 4 bits, providing a total storage capacity of 1 Mbit.
• Access time: 70 ns access time, allowing for quick data retrieval.
• Refresh: Requires periodic refresh cycles to maintain data integrity.
• Package: DIP (Dual In-line Package), making it easy to integrate into existing systems.
• Low power consumption: Designed for efficient power usage.

Benefits:

• Cost-effective memory solution: Provides a low-cost option for adding memory to systems.
• Easy integration: DIP package simplifies integration into existing designs.
• Reliable data storage: Ensures reliable data storage with periodic refresh cycles.
• Reduced power consumption: Low power consumption extends battery life in portable devices.
• Wide range of applications: Suitable for a variety of applications.

Additional Details:

The MT4C4256DJ-7 operates on a 5V power supply. It uses multiplexed address inputs to reduce the pin count. The device requires external refresh circuitry to maintain data integrity. Refer to the Micron datasheet for detailed specifications, timing diagrams, and application notes. It is an older technology DRAM and might be used for replacements in legacy applications. Its operating temperature range typically spans from 0°C to 70°C. The MT4C4256DJ-7 serves as a basic building block for memory systems requiring a limited capacity.