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NM27C256Q from NS,National Semiconductor

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NM27C256Q

Manufacturer: NS

262,144-Bit (32K x 8) High Performance CMOS EPROM

Partnumber Manufacturer Quantity Availability
NM27C256Q NS 13 In Stock

Description and Introduction

262,144-Bit (32K x 8) High Performance CMOS EPROM # Introduction to the NM27C256Q  

The NM27C256Q is a high-performance, 256K-bit (32K x 8) ultraviolet-erasable programmable read-only memory (UV-EPROM) designed for applications requiring non-volatile storage. This component is widely used in embedded systems, industrial controls, and legacy computing where firmware or critical data must be retained without power.  

Featuring a fast access time and low power consumption, the NM27C256Q operates on a single 5V power supply, making it compatible with standard TTL logic levels. Its UV-erasable capability allows for multiple reprogramming cycles, providing flexibility during development and testing. The memory is organized in a byte-wide format, ensuring efficient data handling in 8-bit systems.  

With a durable ceramic or plastic package and a transparent quartz window for UV exposure, the NM27C256Q ensures reliable performance in demanding environments. Its compatibility with industry-standard pinouts simplifies integration into existing designs.  

While newer flash memory technologies have largely replaced EPROMs in modern applications, the NM27C256Q remains relevant in systems requiring long-term stability, radiation resistance, or specialized legacy support. Its robustness and reprogrammability make it a dependable choice for engineers working with older or specialized hardware architectures.

Application Scenarios & Design Considerations

262,144-Bit (32K x 8) High Performance CMOS EPROM

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