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HCS515-IP Datasheet(PDF) 1 Page - Microchip Technology |
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HCS515-IP Datasheet(HTML) 1 Page - Microchip Technology |
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1 / 28 page  © 2002 Microchip Technology Inc. DS40183D-page 1 HCS515 FEATURES Security • Encrypted storage of manufacturer’s code • Encrypted storage of encoder decryption keys • Up to seven transmitters can be learned code hopping technology • Normal and secure learning mechanisms Operating • 4.5V – 5.5V operation • Internal oscillator • Auto bit rate detection Other • Stand-alone decoder • Internal EEPROM for transmitter storage • Synchronous serial interface • 1 Kbit user EEPROM • 14-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 encoders and transponders configured for the fol- lowing 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. DESCRIPTION The Microchip Technology Inc. HCS515 is a code hop- ping decoder designed for secure Remote Keyless Entry (RKE) systems. The HCS515 utilizes the pat- ented 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 HCS515 can be used as a stand-alone decoder or in conjunction with a microcontroller. PACKAGE TYPE BLOCK DIAGRAM The manufacturer’s code, encoder decryption keys, and synchronization information are stored in encrypted form in internal EEPROM. The HCS515 uses the S_DAT and S_CLK inputs to communicate with a host controller device. The HCS515 operates over a wide voltage range of 4.5V – 5.5V. The decoder employs automatic bit rate detection, which allows it to compensate for wide vari- PDIP, SOIC 1 2 3 4 NC NC VDD S1 NC NC Vss RF_IN 5 6 7 14 13 12 11 10 9 8 S0 MCLR NC S_CLK S_DAT NC Reception Register Internal CONTROL DECRYPTOR RFIN OSCILLATOR S_DAT S_CLK MCLR EEPROM EE_DAT EE_CLK S0 S1 KEELOQ® Code Hopping Decoder |
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