The D2732A is a 32,768-bit (4096 x 8) Electrically Erasable Programmable Read-Only Memory (EEPROM) manufactured by NEC. This non-volatile memory device allows data to be electrically erased and reprogrammed, making it suitable for applications requiring occasional data updates or field programmability.
Applications
- Embedded Systems: Storing configuration data, calibration parameters, and firmware in embedded systems.
- Industrial Control Systems: Storing program code and data in programmable logic controllers (PLCs) and other industrial control equipment.
- Instrumentation: Storing calibration data and measurement parameters in test and measurement instruments.
- Data Logging: Recording data in data loggers and other data acquisition systems.
- Robotics: Storing robot control programs and calibration data.
Features
- Electrically Erasable and Programmable: Allows for in-system programming and reprogramming.
- Non-Volatile: Retains data even when power is removed.
- Fast Access Time: Provides quick data retrieval.
- Single 5V Power Supply: Operates from a single 5-volt power supply.
- TTL Compatible Inputs/Outputs: Easy interface with TTL logic circuits.
- Three-State Output: Allows for easy connection to a microprocessor bus.
Benefits
- Flexibility: Enables field programmability and data updates without replacing the memory device.
- Data Retention: Ensures that data is preserved even during power outages.
- High Performance: Provides fast data access for real-time applications.
- Ease of Use: Simple interface simplifies system design.
- Reduced Development Time: Speeds up development by allowing for easy program modification.
Additional Details
The D2732A's electrical characteristics, such as access time, programming voltage, and erase time, are crucial for system design and performance. Consult the datasheet for precise values. The device utilizes a byte-wide organization, making it suitable for storing character data, program code, or other byte-oriented data. The programming process involves applying a specific voltage to the programming pins, while the erase process requires a different voltage and timing sequence. The memory array is organized as 4096 bytes, providing a total storage capacity of 32,768 bits. This type of EEPROM device is typically used in applications where the amount of data to be stored is relatively small, and the number of erase/program cycles is limited.
