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AN652 - Code Hopping Decoder Using Secure Learn

Key Features

  • Stand alone decoder.
  • Compatible with Microchip HCS200, HCS300, HCS301, HCS360, and HCS361 encoders.
  • Automatic bit rate detection.
  • Automatic encoder type detection.
  • Four function outputs.
  • Six learnable transmitters.
  • RC Oscillator.

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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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AN652 Code Hopping Decoder Using Secure Learn Author: Steven Dawson Standard Microcontroller and ASSP Division KEY FEATURES • Stand alone decoder • Compatible with Microchip HCS200, HCS300, HCS301, HCS360, and HCS361 encoders • Automatic bit rate detection • Automatic encoder type detection • Four function outputs • Six learnable transmitters • RC Oscillator OVERVIEW This application note fully describes the working of a code hopping decoder implemented on a Microchip PIC16C56 microcontroller. This decoder uses the secure learn (seed-based) method of learning new transmitters. This application note describes the various KEELOQ code hopping encoders that can be used with the decoder, the decoder hardware, and the various software modules comprising the system.