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AT27C256R-70RI

AT27C256R-70RI Description

The AT27C256R-70RI is a 256 Kbit EPROM (Erasable Programmable Read-Only Memory) IC designed for parallel memory interface applications. Manufactured by Microchip Technology, this memory IC chip is housed in a 28-pin SOIC package and is suitable for surface mount applications. The AT27C256R-70RI features a memory organization of 32K x 8, offering a total of 256 Kbit of non-volatile memory. It operates within a supply voltage range of 4.5V to 5.5V and has an access time of 70 ns, ensuring fast data retrieval. This EPROM is ideal for applications requiring reliable and non-volatile storage solutions. Despite being marked as obsolete, the AT27C256R-70RI remains a robust choice for legacy systems and specific embedded applications.

AT27C256R-70RI Features

• Memory Organization: The AT27C256R-70RI is organized as 32K x 8, providing a total of 256 Kbit of memory. This organization allows for efficient storage and retrieval of data in 8-bit chunks, making it suitable for a wide range of applications requiring non-volatile memory.
• Access Time: With an access time of 70 ns, the AT27C256R-70RI ensures fast data retrieval, making it ideal for applications where quick access to stored data is critical.
• Supply Voltage: The IC operates within a supply voltage range of 4.5V to 5.5V, providing flexibility in power supply requirements and ensuring compatibility with various power sources.
• Memory Format: The AT27C256R-70RI is an EPROM, which means it can be erased and reprogrammed multiple times using ultraviolet light, offering flexibility in data storage and modification.
• Mounting Type: The surface mount package of the AT27C256R-70RI allows for easy integration into modern printed circuit boards (PCBs), ensuring compatibility with contemporary manufacturing processes.
• Moisture Sensitivity Level (MSL): The AT27C256R-70RI has an MSL of 2 (1 Year), indicating its resistance to moisture and suitability for storage and handling in various environmental conditions.
• Package Type: The 28-pin SOIC package provides a compact and reliable form factor, suitable for space-constrained applications while maintaining robust mechanical and electrical characteristics.

AT27C256R-70RI Applications

The AT27C256R-70RI is well-suited for a variety of applications that require non-volatile memory storage. Some specific use cases include:

• Embedded Systems: Ideal for embedded systems where firmware or configuration data needs to be stored and accessed quickly. The fast access time and non-volatile nature of the AT27C256R-70RI make it a reliable choice for such applications.
• Legacy Systems: Given its status as an obsolete component, the AT27C256R-70RI is particularly useful for maintaining and upgrading legacy systems that rely on this specific memory IC.
• Industrial Control: The robustness and reliability of the AT27C256R-70RI make it suitable for industrial control applications where data integrity and quick access are crucial.
• Telecommunications: In telecommunications systems, the AT27C256R-70RI can be used for storing configuration data and firmware, ensuring stable and reliable operation.

Conclusion of AT27C256R-70RI

The AT27C256R-70RI, manufactured by Microchip Technology, is a versatile and reliable 256 Kbit EPROM IC. Despite being marked as obsolete, its technical specifications and performance benefits make it an ideal choice for legacy systems and specific embedded applications. With a fast access time of 70 ns, a supply voltage range of 4.5V to 5.5V, and a surface mount package, the AT27C256R-70RI offers flexibility and reliability in various applications. Its memory organization of 32K x 8 and EPROM format provide efficient data storage and modification capabilities. The AT27C256R-70RI remains a robust solution for applications requiring non-volatile memory storage.