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AT27C256R-70RU

AT27C256R-70RU Description

The AT27C256R-70RU is a 256Kbit EPROM (Erasable Programmable Read-Only Memory) device manufactured by Microchip Technology. This memory IC chip is designed with a parallel memory interface, offering a memory organization of 32K x 8. It is housed in a surface-mount package, specifically a 28-pin SOIC (Small Outline Integrated Circuit) configuration, and is available in a tube package format. The AT27C256R-70RU operates within a supply voltage range of 4.5V to 5.5V and features an access time of 70 nanoseconds, ensuring rapid data retrieval. This EPROM is classified under ECCN EAR99 and is compliant with REACH and ROHS3 standards, making it suitable for a wide range of applications. Despite being marked as obsolete, the AT27C256R-70RU remains a reliable choice for legacy systems and specific applications requiring its unique capabilities.

AT27C256R-70RU Features

• Memory Size and Organization: The AT27C256R-70RU provides a total memory size of 256Kbit, organized as 32K x 8, which means it has 32,768 memory locations, each capable of storing 8 bits of data.
• Parallel Interface: The parallel memory interface allows for efficient data transfer, making it suitable for systems requiring high-speed data access.
• Fast Access Time: With an access time of 70 nanoseconds, this EPROM ensures quick data retrieval, enhancing the performance of systems that rely on rapid memory access.
• Wide Operating Voltage Range: The device operates within a supply voltage range of 4.5V to 5.5V, providing flexibility in power supply requirements.
• Surface-Mount Technology (SMT): The surface-mount package type facilitates easy integration into modern printed circuit boards (PCBs) and supports automated assembly processes.
• Compliance and Standards: The AT27C256R-70RU is REACH unaffected and ROHS3 compliant, ensuring it meets environmental and safety standards for electronics manufacturing.
• Moisture Sensitivity Level (MSL): The device has an MSL rating of 2 (1 Year), indicating it can be safely stored and handled for up to one year without additional moisture protection measures.

AT27C256R-70RU Applications

The AT27C256R-70RU is ideal for applications requiring non-volatile memory with fast access times and reliable performance. Some specific use cases include:

• Embedded Systems: Ideal for embedded systems where firmware or configuration data needs to be stored and accessed quickly.
• Industrial Control: Suitable for industrial control systems that require robust and reliable memory solutions for storing critical operational data.
• Telecommunications: Used in telecommunication equipment for storing configuration parameters and firmware updates.
• Consumer Electronics: Applicable in consumer electronics for storing boot code and other essential data that needs to be retained even when power is off.
• Automotive Systems: Utilized in automotive applications for storing calibration data and other critical information that must be quickly accessible.

Conclusion of AT27C256R-70RU

The AT27C256R-70RU is a versatile and reliable EPROM device that offers a balance of performance and compatibility. Despite its obsolescence, it remains a valuable component for systems that require its specific memory size, access time, and voltage range. Its compliance with industry standards and surface-mount packaging make it an attractive choice for a variety of applications, from embedded systems to industrial control. For engineers and designers working with legacy systems or specific applications that benefit from its unique features, the AT27C256R-70RU continues to be a dependable option.