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HCS412 - Code Hopping Encoder and Transponder

General Description

The HCS412 combines patented K EELOQ® code hopping tech nology with bi-di rectional transponder challenge-and-response security into a single chip solution for logical and physical access control.

Key Features

  • Security.
  • Programmable 64-bit encoder crypt key Two 64-bit IFF keys Keys are read protected 32-bit bi-directional challenge and response using one of two possible keys 69-bit transmission length.
  • 32-bit hopping code,.
  • 37-bit nonencrypted portion Programmable 28/32-bit serial number 60-bit, read protected seed for secure learning Two IFF encryption algorithms Delayed counter increment mechanism Asynchronous transponder communicati.

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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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HCS412 KEELOQ® Code Hopping Encoder and Transponder FEATURES Security • • • • • Programmable 64-bit encoder crypt key Two 64-bit IFF keys Keys are read protected 32-bit bi-directional challenge and response using one of two possible keys 69-bit transmission length • 32-bit hopping code, • 37-bit nonencrypted portion Programmable 28/32-bit serial number 60-bit, read protected seed for secure learning Two IFF encryption algorithms Delayed counter increment mechanism Asynchronous transponder communication Transmissions include button Queuing information 2.0V to 6.