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HCS361 Datasheet(PDF) 1 Page - Microchip Technology |
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HCS361 Datasheet(HTML) 1 Page - Microchip Technology |
1 / 42 page © 2011 Microchip Technology Inc. DS40146F-page 1 FEATURES Security • Programmable 28/32-bit serial number • Programmable 64-bit encryption key • Each transmission is unique • 67-bit transmission code length • 32-bit hopping code • 35-bit fixed code (28/32-bit serial number, 4/0-bit function code, 1-bit status, 2-bit CRC) • Encryption keys are read protected Operating • 2.0-6.6V operation • Four button inputs - 15 functions available • Selectable baud rate • Automatic code word completion • Battery low signal transmitted to receiver • Nonvolatile synchronization data • PWM and VPWM modulation Other • Easy to use programming interface • On-chip EEPROM • On-chip oscillator and timing components • Button inputs have internal pull-down resistors • Current limiting on LED output • Minimum component count Enhanced Features Over HCS300 • 48-bit seed vs. 32-bit seed • 2-bit CRC for error detection • 28/32-bit serial number select • Two seed transmission methods • PWM and VPWM modulation • Wake-up signal in VPWM mode • IR Modulation mode Typical Applications The HCS361 is ideal for Remote Keyless Entry (RKE) applications. These applications include: • Automotive RKE systems • Automotive alarm systems • Automotive immobilizers • Gate and garage door openers • Identity tokens • Burglar alarm systems DESCRIPTION The HCS361 is a code hopping encoder designed for secure Remote Keyless Entry (RKE) systems. The HCS361 utilizes the KEELOQ® code hopping technol- ogy, which incorporates high security, a small package outline and low cost, to make this device a perfect solution for unidirectional remote keyless entry sys- tems and access control systems. PACKAGE TYPES HCS361 BLOCK DIAGRAM DESCRIPTION The HCS361 combines a 32-bit hopping code generated by a nonlinear encryption algorithm, with a 28/32-bit serial number and 7/3 status bits to create a 67-bit transmission stream. 1 2 3 4 8 7 6 5 S0 S1 S2 S3 VDD LED DATA VSS PDIP, SOIC VSS VDD Oscillator RESET circuit LED driver Controller Power latching and switching Button input port 32-bit shift register Encoder EEPROM DATA LED S3 S2 S1 S0 HCS361 KEELOQ® Code Hopping Encoder |
Similar Part No. - HCS361_11 |
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Similar Description - HCS361_11 |
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