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DESCRIPTION

The Microchip Technology Inc. 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.

FEATURES

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

? 3.0V – 6.0V operation

? 4 MHz 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