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DESCRIPTION

The Microchip Technology Inc. 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.

FEATURES

Security

? Encrypted storage of manufacturer’s code

? Encrypted storage of encoder 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

? HCS200, HCS300, HCS301, HCS360, HCS410 (PWM Mode)