DS2506

64Kb Add-Only Memory


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Description

The DS2506 is a 64Kb 1-Wire® EPROM. Like all 1-Wire devices, the DS2506 consists of a factory-lasered 64-bit ROM registration number that includes a unique 48-bit serial number, an 8-bit CRC, and an 8-bit family code (0FH) plus 64Kb of user-programmable EPROM. The power to program and read the DS2506 is derived entirely from the 1-Wire communication line. Data is transferred serially via the 1-Wire protocol which requires only a single data lead and a ground return. The entire device can be programmed and then write protected if desired. Alternatively, the part may be programmed multiple times with new data being appended to, but not overwriting, existing data with each subsequent programming of the device. Note: Individual bits can be changed only from a logical 1 to a logical 0, never from a logical 0 to a logical 1.

Key Features

  • 65,536 bits electrically programmable read only memory (EPROM)
  • Unique, factory-lasered and tested 64-bit registration number assures absolute traceability because no two parts are alike
  • Built-in multidrop controller ensures compatibility with other 1-Wire products
  • EPROM partitioned into 256-bit pages for randomly accessing packetized data records
  • Each memory page can be permanently write-protected to prevent tampering
  • Reduces control, address, data, power, and programming signals to a single data pin
  • Directly connects to a single port pin of a microprocessor and communicates at up to 16.3kbps
  • Overdrive mode boosts communication speed to 142kbps
  • Low-cost PR35 or 8-pin SO surface-mount package
  • Reads over a wide voltage range of 2.8V to 6.0V from -40°C to +85°C; programs at 11.5V to 12.0V from -40°C to +50°C

CAD Symbols and Footprints

  • DS2506
  • DS2506S+
  • Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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    Related Resources

    Type ID Title
    Reference Circuit244Advanced 1-Wire Network Driver