National Semiconductor NM27P512 524,288-Bit (64K x 8) Processor Oriented CMOS EPROM Data Sheet User Manual
Summary
This professional datasheet summarizes the NM27P512, a high-performance 512K Processor Oriented CMOS EPROM configured as 64K x 8. It is engineered for embedded system designers seeking reliable microprocessor interfacing with minimized wait states. The manual provides comprehensive technical guidelines, including performance characteristics (up to 120 ns access time), electrical specifications, package variations (DIP and PLCC), and detailed compatibility information crucial for integrating high-speed digital circuits.
Manual Details
| Brand | National |
|---|---|
| Pages | 12 |
| File Size | 178.37 KB |
| Published | May 31, 2026 |
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Frequently Asked Questions
What is the guaranteed access time for different versions of the NM27P512?
The guaranteed access time can be 120 ns, 150 ns, or 200 ns depending on the specific order number (e.g., Q, NE, VE).
Which package type is available for commercial and extended temperature ranges?
The datasheet notes that surface mount PLCC packages are available for both commercial and extended temperature ranges.
How do I ensure compatibility while reducing wait states?
The NM27P512 features improved output turn-off time and increased output hold time, eliminating the need for additional devices to adapt it or require external circuitry.
What type of environment is suitable for this EPROM depending on the temperature range needed?
The device supports Commercial (0°C to 70°C), Industrial (–40°C to 85°C), and Military (-55°C to 125°C) temperature ranges.