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DS1995 - 16Kb Memory iButton

Key Features

  • 16384 bits of read/write nonvolatile memory.
  • 256-bit scratchpad ensures integrity of data transfer.
  • Overdrive mode boosts communication to 142 kbits per second.
  • Memory partitioned into 256-bit pages for packetizing data.
  • Data integrity assured with strict read/write protocols.
  • Operating temperature range from -40C to +70C.
  • Over 10 years of data retention COMMON iButton.

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Other Datasheets by Maxim Integrated (now Analog Devices)

Part Number Description
DS1990A Serial Number iButton
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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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19-4895; Rev 8/09 SPECIAL FEATURES  16384 bits of read/write nonvolatile memory  256-bit scratchpad ensures integrity of data transfer  Overdrive mode boosts communication to 142 kbits per second  Memory partitioned into 256-bit pages for packetizing data  Data integrity assured with strict read/write protocols  Operating temperature range from -40C to +70C  Over 10 years of data retention COMMON iButton FEATURES  Unique, factory-lasered and tested 64-bit registration number (8-bit family code + 48-bit serial number + 8-bit CRC tester) assures absolute traceability because no two parts are alike  Multidrop controller for MicroLAN  Digital identification and information by momentary contact  Chip-based data carrier compactly stores information  Data can be accessed while affi