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HCS201 数据表(PDF) 1 Page - Microchip Technology |
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HCS201 数据表(HTML) 1 Page - Microchip Technology |
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1 / 28 page ![]() © 2001 Microchip Technology Inc. DS41098C-page 1 FEATURES Security • Programmable 28-bit serial number • Programmable 64-bit encryption key • Each transmission is unique • 66-bit transmission code length • 32-bit hopping code • 34-bit fixed code (28-bit serial number, 4-bit button code, 2-bit status) • Encryption keys are read protected Operating • 3.5V-13V operation (2.0V min. using the Step up feature) • Three button inputs • 7 functions available • Selectable baud rate • Automatic code word completion • Battery low signal transmitted to receiver • Non-volatile synchronization data Other • Simple programming interface • On-chip EEPROM • On-chip oscillator and timing components • Button inputs have internal pull-down resistors • Minimum component count • Synchronous Transmission mode • Built-in step up regulator Typical Applications • The HCS201 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 HCS201 from Microchip Technology Inc. is a code hopping encoder designed for secure Remote Keyless Entry (RKE) systems. The HCS201 utilizes the KEELOQ code hopping technology, incorporating high security, a small package outline and low cost. The HCS201 is a perfect solution for unidirectional remote keyless entry systems and access control systems. PACKAGE TYPES HCS201 BLOCK DIAGRAM The HCS201 combines a 32-bit hopping code, generated by a nonlinear encryption algorithm, with a 28-bit serial number and 6 information bits to create a 66-bit code word. The code word length eliminates the threat of code scanning and the code hopping mecha- nism makes each transmission unique, thus rendering code capture and resend schemes useless. 1 2 3 4 8 7 6 5 S0 S1 S2 VDDB VDD STEP DATA VSS PDIP, SOIC VSS VDD Oscillator RESET circuit Controller Power latching and switching Button input port 32-bit shift register Encoder EEPROM DATA S2 S1 S0 Step Up Controller VDDB VDD STEP HCS201 KEELOQ® Code Hopping Encoder |
类似零件编号 - HCS201 |
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类似说明 - HCS201 |
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