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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.
HCS412 Datasheet
