AT28C64B-15SU-T:Configuration, function, application field

The AT28C64B-15SU-T is a specific product identifier for a 64-kilobit (8K x 8) Parallel EEPROM (Electrically Erasable Programmable Read-Only Memory) manufactured by Microchip Technology. Below is a breakdown of its configuration, function, and potential application fields:



  • Memory Size: The AT28C64B-15SU-T has a memory size of 64 kilobits, organized as 8 kilobytes with 8 bits per byte.
  • Interface: It features a parallel interface, meaning data is transferred in parallel, usually requiring more pins for communication compared to serial interfaces.
  • Operating Voltage: Typically operates within standard digital voltage levels specified in the datasheet.
  • DataSheet AT28C64B-15SU-T PDF


  • Non-Volatile Memory: This EEPROM provides non-volatile memory storage where data can be retained even when power is removed.
  • Parallel Interface: Data is transferred in parallel, which can provide faster communication compared to serial interfaces but may require more pins.
  • Read and Write Operations: Supports both read and write operations, enabling the storage and retrieval of data as needed.
  • Electrically Erasable: Supports electrically erasable operations, allowing data to be erased and reprogrammed without the need for UV erasure as with older EPROM technologies.

Application Field:

  • Embedded Systems: Often used in embedded systems for storing program code, configuration data, bootloaders, or critical parameters.
  • Historical Replacements: In certain legacy systems or designs, these types of parallel EEPROMs may be used as replacements or for compatibility with existing hardware.
  • Industrial Automation: Applied in industrial control systems, automation equipment, and PLCs for configuration storage and data logging.
  • Telecommunications: Used in networking equipment, telecommunications devices, and infrastructure for storing firmware, settings, and configuration data.
  • Medical Devices: Utilized in medical devices and equipment for storing calibration data, patient information, and device settings.


  • The configuration of the AT28C64B-15SU-T involves addressing specific memory locations and programming data accordingly.
  • Functions include reliable data storage and retrieval within electronic systems using parallel communication protocols.
  • The application fields mentioned are common areas where such EEPROMs may be employed, and actual applications could vary based on specific design requirements.

For detailed technical specifications, usage guidelines, and application notes, it's advisable to consult the official datasheet and technical documentation provided by Microchip Technology. Additionally, reaching out to Microchip's support resources can offer further insights into the optimal utilization of the AT28C64B-15SU-T EEPROM in various electronic systems.


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