The UPD27C4096D-12 is a 4-Megabit (512K x 8) CMOS EPROM (Erasable Programmable Read-Only Memory) manufactured by NEC. It is a high-density memory device designed for applications requiring non-volatile storage of large amounts of program code or data.

Applications

  
• Embedded Systems: Storage of firmware, boot code, and configuration data in embedded systems.
  
• Industrial Control: Retaining control algorithms, calibration data, and system parameters in industrial equipment.
  
• Telecommunications Equipment: Storing firmware and configuration settings in telecommunication devices.
  
• Consumer Electronics: Used in devices such as printers, scanners, and other peripherals for storing firmware and program data.
  
• Networking Equipment: Storage of boot code and operating system images in network devices.

Features

  
• High Density: 4-Megabit storage capacity allows for large program and data storage.
  
• High Speed: Access time of 120 ns allows for quick data retrieval.
  
• CMOS Technology: Low power consumption, suitable for battery-backed applications.
  
• UV Erasable: Can be erased using ultraviolet light and reprogrammed.
  
• Single 5V Power Supply: Requires only a single 5V power supply for operation.
  
• TTL Compatible: Compatible with standard TTL logic levels.

Benefits

  
• Non-Volatile Memory: Data is retained even when power is removed.
  
• Reprogrammable: UV erasure and reprogramming allow for easy updates and modifications.
  
• Low Power: CMOS technology minimizes power consumption.
  
• Reliable: Offers dependable data storage for critical applications.
  
• Cost-Effective: Provides a cost-efficient solution for high-density non-volatile memory needs.

Additional Details

The UPD27C4096D-12 is typically available in a 32-pin DIP or surface-mount package. Programming requires a dedicated EPROM programmer and adherence to the manufacturer's specified programming algorithm and voltage levels. Ensure proper UV erasure techniques are employed before reprogramming to guarantee complete data removal. Consult the datasheet for precise electrical characteristics, programming specifications, and timing diagrams. The operating temperature range usually spans from 0°C to 70°C.