Hopping Decoder 8-Pin SOIJ T/R

The HCS500 is a code hopping decoder designed for secure Remote Keyless Entry (RKE) systems. The HCS500 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 and access control systems. The HCS500 can be used as a stand-alone decoder or in conjunction with a microcontroller.

• Security
• Encrypted storage of manufacturer’s code
• Encrypted storage of crypt keys
• Up to seven transmitters can be learned
• KEELOQ code hopping technology
• Normal and Secure learning mechanisms Operating
• 3.0V—5.5V operation
• Internal oscillator
• Auto bit rate detection Other
• Stand-alone decoder chipset
• External EEPROM for transmitter storage
• Synchronous serial interface
• 1 Kbit user EEPROM
• 8-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 100us to 400us
• 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