This application note fully describes the working of a
code hopping decoder implemented on a Microchip
PIC16C56 microcontroller. Background is given on the
various KEELOQ
®
code hopping encoders that can be
used with the decoder, the decoder hardware described,
and descriptions of the various software modules com -
prising the system. The software can be used to imple -
ment a stand-alone decoder or integrated with full
function security systems. The decoder supports the
Microchip HCS200, HCS201, HCS300, HCS301,
HCS360, HCS361 and HCS410 KEELOQ Code Hopping
Encoders. AN661
Code Hopping Decoder Using a PIC16C56
KEY FEATURES
Author: Steven Dawson Stand-alone decoder
Microchip Technology Inc. Compatible with Microchip HCS200, HCS201,
HCS300, HCS301, HCS360, HCS361 and
HCS410 encoders
OVERVIEW Automatic baud rate detection
Automatic encoder type detection
This application note fully describes the working of a Four fu……
