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AT28HC256E-12SI

AT28HC256E-12SI Description

The AT28HC256E-12SI is a 256Kbit EEPROM memory IC chip manufactured by Microchip Technology. This device is designed for surface mount applications and features a parallel memory interface. It is organized as 32K x 8, providing 32,768 bytes of non-volatile memory. The AT28HC256E-12SI operates within a supply voltage range of 4.5V to 5.5V and offers an access time of 120 nanoseconds, ensuring fast data retrieval. The write cycle time for this EEPROM is 10 milliseconds, making it suitable for applications requiring reliable and relatively quick write operations. The device is packaged in a tube and has a moisture sensitivity level (MSL) of 2, which allows for a storage period of up to one year under specified conditions.

AT28HC256E-12SI Features

• Memory Organization: The AT28HC256E-12SI is organized as 32K x 8, providing a total of 256Kbit (32,768 bytes) of EEPROM memory. This organization allows for efficient data storage and retrieval.
• Access Time: With an access time of 120 nanoseconds, the AT28HC256E-12SI ensures rapid data access, which is crucial for applications requiring quick read operations.
• Write Cycle Time: The write cycle time of 10 milliseconds allows for reliable and relatively quick write operations, making this EEPROM suitable for applications that require frequent updates to memory.
• Voltage Range: The device operates within a supply voltage range of 4.5V to 5.5V, providing flexibility in power supply requirements.
• Surface Mount: The surface mount mounting type is ideal for modern printed circuit board (PCB) designs, ensuring a compact and reliable physical integration.
• Moisture Sensitivity Level: The MSL of 2 (1 Year) ensures that the device can be stored for up to one year under specified conditions without degradation, which is beneficial for inventory management and long-term storage.
• Parallel Interface: The parallel memory interface allows for straightforward integration with microcontrollers and other digital systems, facilitating high-speed data transfer.

AT28HC256E-12SI Applications

The AT28HC256E-12SI is well-suited for a variety of applications where non-volatile memory is required. Some specific use cases include:

• Embedded Systems: Ideal for embedded systems that require reliable data storage and quick access times. The EEPROM can store configuration data, calibration parameters, and other critical information that needs to be retained even when power is lost.
• Industrial Control: In industrial control applications, the AT28HC256E-12SI can store important operational parameters and settings, ensuring that the system can resume operation with the correct settings after a power cycle.
• Consumer Electronics: For consumer electronics, this EEPROM can store user preferences, firmware updates, and other essential data, enhancing the user experience and system functionality.
• Automotive Systems: In automotive applications, the EEPROM can store critical data such as engine parameters, diagnostic information, and user settings, contributing to the reliability and functionality of the vehicle's electronic systems.

Conclusion of AT28HC256E-12SI

The AT28HC256E-12SI is a robust and reliable EEPROM memory IC chip that offers a balance of performance and functionality. Its fast access time, reasonable write cycle time, and flexible voltage range make it suitable for a wide range of applications. The surface mount package and moisture sensitivity level ensure that it can be easily integrated into modern PCB designs and stored safely. While the product is marked as obsolete, it remains a viable option for existing designs and applications that require its specific features. For new designs, engineers may need to consider alternative solutions, but the AT28HC256E-12SI remains a reliable choice for applications where its unique features are required.