The UPD424260LE-80 is a 262,144-word x 4-bit dynamic RAM (DRAM) manufactured by NEC. It is designed for high-density memory applications requiring fast access times and low power consumption. This DRAM offers a cost-effective solution for storing large amounts of data in computer systems and other electronic devices.

Applications

• Computer memory
• Graphics cards
• Digital signal processing systems
• Embedded systems
• Video game consoles

Features

• 262,144-word x 4-bit organization: Provides a high memory capacity.
• Fast access time: 80ns access time allows for quick data retrieval.
• Low power consumption: Minimizes power dissipation in the system.
• TTL compatible inputs and outputs: Enables easy interfacing with other logic circuits.
• Refresh function: Requires periodic refresh cycles to maintain data integrity.

Benefits

• Increased memory capacity: Allows for larger programs and data sets.
• Improved system performance: Fast access time enhances overall system speed.
• Reduced power consumption: Extends battery life in portable devices.
• Simplified system design: TTL compatibility simplifies interfacing with other components.
• Cost-effective memory solution: Provides a high-density memory at a competitive price.

Additional Details

The UPD424260LE-80 operates on a single 5V power supply. It requires a refresh cycle to maintain data integrity, typically performed every few milliseconds. The device is available in a standard DIP package. It's commonly used in older computer systems and other electronic devices where high memory capacity and fast access times are required. The DRAM utilizes multiplexed address inputs to reduce the number of pins required. It requires external refresh circuitry to maintain data integrity. Specific refresh rates and timings can be found in the datasheet.