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DS1963L-F5 iButton

DS1963L-F5 iButton

4-kbit Monetary iButton®
Datasheet : DS1963L.pdf

The DS1963L-F5 Monetary iButton is a rugged read/write data carrier that acts as a localized database that can be easily accessed with minimal hardware. The nonvolatile memory offers a simple solution to storing and retrieving information pertaining to the object to which the iButton is associated. Data is transferred serially via the 1-Wire protocol which requires only a single data lead and a ground return. The scratchpad is an additional page that acts as a buffer when writing to memory. Data is first written to the scratchpad where it can be read back. After the data has been verified, a copy scratchpad command will transfer the data to memory. This process ensures data integrity when modifying the memory. A 48-bit serial number is factory lasered into each DS1963L to provide a guaranteed unique identity which allows for absolute traceability. The durable MicroCan package is highly resistant to environmental hazards such as dirt, moisture, and shock. Its compact coin-shaped profile is self-aligning with mating receptacles, allowing the DS1963L-F5 iButton to be easily used by human operators. Accessories permit the DS1963L to be mounted on almost any surface including plastic key fobs, photo-ID badges and printed circuit boards.


  • 4096 bits of read/write nonvolatile memory
  • Overdrive mode boosts communication speed to 142 kbits per second
  • 256-bit scratchpad ensures integrity of data transfer
  • Memory partitioned into 256-bit pages for packetizing data
  • Data integrity assured with strict read/write protocols
  • Four 32-bit read-only non rolling-over page write cycle counters
  • 32 factory-preset tamper-detect bits to indicate physical intrusion
  • On-chip 16-bit CRC generator for safeguarding data transfers
  • Operating temperature range from -40°C to +70°C
  • Over 10 years of data retention