Code Hopping Decoder 18-Pin SOIC W T/R

The HCS512 is a code hopping decoder designed for secure Remote Keyless Entry (RKE) systems. The HCS512 utilizes the patented KEELOQ code hopping system and high security learning mechanisms to make this a canned solution when used with the HCS encoders to implement a unidirectional remote keyless entry system.

• Security
• Secure storage of Manufacturer’s Code
• Secure storage of transmitter’s keys
• Up to four transmitters can be learned
• KEELOQ® code hopping technology
• Normal and secure learning mechanisms Operating
• 4.0V - 6.0V operation
• 4 MHz external RC oscillator
• Learning indication on LRNOUT
• Auto baud rate detection
• Power saving SLEEP mode Other
• Stand-alone decoder
• On-chip EEPROM for transmitter storage
• Four binary function outputs-15 functions
• 18-pin DIP/SOIC package Typical Applications
• Automotive remote entry systems
• Automotive alarm systems
• Automotive immobilizers
• Gate and garage openers
• Electronic door locks
• Identity tokens
• Burglar alarm systems Compatible Encoders All KEELOQ encoders and transponders configured for the following setting:
• PWM modulation format (1/3-2/3)
• TE in the range from 100 µs to 400 µs
• 10 x TE Header
• 28-bit Serial Number
• 16-bit Synchronization counter
• Discrimination bits equal to Serial Number 8 LSbs
• 66 to 69-bit length code word
• Tape and Reel Packaging