HCS512/P Microchip Technology, HCS512/P Datasheet

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... Microchip Technology Inc. ® Code Hopping Decoder OQ DESCRIPTION The Microchip Technology Inc. HCS512 is a code hop- ping decoder designed for secure Remote Keyless Entry (RKE) systems. The HCS512 utilizes the pat- ented learning mechanisms to make this a canned solution when used with the HCS encoders to implement a uni- directional remote keyless entry system ...

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... Note: The manufacturer code is a pivotal part of the system’s overall security. Conse- quently, all possible precautions must be taken and maintained for this code. 2002 Microchip Technology Inc. ...

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... FIGURE 1-2: BUILDING THE TRANSMITTED CODE WORD (ENCODER) EEPROM Array Crypt Key Sync Counter Serial Number 2002 Microchip Technology Inc. Key Crypt Key A receiver may use any type of controller as a decoder, but it is typically a microcontroller with compatible firm- ware that allows the decoder to operate in conjunction with an HCS512 based transmitter ...

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... Data in Programming mode and Synchronous mode TTL/ST — Power connection TTL Oscillator out (test point) ST Oscillator in – recommended values 4.7 k — TTL RF input from receiver Serial Number Sync Counter Crypt Key Check for Match Switch 0 Switch 1 Switch 2 Switch 3 and 22 pF 2002 Microchip Technology Inc. ...

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... Note: The Decoder output PWM format logic (“1” / “0”) is reversed with respect of the Encoder modulation format. 2002 Microchip Technology Inc. A special status message is transmitted on the second pass of learn. This allows the controlling microcontrol- ler to determine if the learn was successful (Result = 1) and if a previous transmitter was overwritten (Overwrite = 1) ...

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... Generate Key from Serial Number or Seed Value Use Generated Key to Decrypt Compare Discrimination Value with Serial Number input low for Equal Learn successful. Store: Serial number check value Synchronization counter crypt key Exit LEARN SEQUENCE No ? Yes Learn Unsuccessful 2002 Microchip Technology Inc. ...

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... Check if the synchronization counter falls within the second synchronization window. • valid transmission is found, update the syn- chronization counter, else use the next transmitter block and repeat the tests. 2002 Microchip Technology Inc. HCS512 FIGURE 4-2: DECODER OPERATION Start No ...

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... Note: During SLEEP mode the CLK line will change from an output line to an input line that can be used to wake-up the device. Connect CLK to to reliably enter the Learn mode whenever SLEEP mode is active. via a 100K resistor LRNIN 2002 Microchip Technology Inc. ...

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... The HCS512 will handle all the decoding functions and the microcontroller, all the system functions. The Serial Output mode with 2-wire interface can be used if the microcontroller is I/O limited. 2002 Microchip Technology Inc. HCS512 6.0 DECODER PROGRAMMING The PG306001 production programmer will allow easy setup and programming of the configuration byte and the manufacturer’ ...

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... Man Man Man Key_5 Key_4 Key_3 Byte 0, right-most bit downloaded first 159 104 (Carry is discarded (Carry is discarded 1C0 (Carry is discarded code of 01234567- and a Configuration Word the DOWNLOAD DATA Byte 2 Byte 1 Byte 0 Man Man Man Key_2 Key_1 Key_0 2002 Microchip Technology Inc. ...

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... Hold time 1 TPH1 Hold time 2 TPH2 Clock High Time TCKH Clock Low Time TCKL Acknowledge Time TACK Acknowledge duration TACKH Note: F equals 4 MHz. OSC 2002 Microchip Technology Inc. T CKL T PH2 CKH Bit0 Bit1 Bit78 Bit79 80-bit Data Package Min 0.05 0.05 0.050 — ...

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... For 60-bit seed encoders: SourceH = Seed (with upper 4 bits always zero) Upper 28 bits SourceL = Seed Lower 32 bits DS40151D-page 12 Patched Key Generation Algorithms ------------------- Decrypt XOR (with upper 4 bits always zero) (with upper 4 bits always zero) << 16 Upper 16 bits Encoder Key 2002 Microchip Technology Inc. ...

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... Padding 28-bit Serial Number 6 Secure Learn (SC_LRN = bits of Seed Transmission Padding MS 28 bits of Seed Transmission 0000b Secure Learn XOR (SC_LRN = bits of Seed Transmission Padding MS 28 bits of Seed Transmission 0000b 2002 Microchip Technology Inc Upper 32 bits Lower 32 bits LRN0 = bits of crypt key ...

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... LOGIC "1" 10xT Encrypted E Header Portion 32 bits of Encrypted Portion Serial Number Button OVR (28 bits) Status (2 bits Serial Number (28 bits Fixed Code Guard Portion Time DISC Sync Counter (10 bits) (16 bits) LSb 66 Data bits Transmitted LSb first. SEED (32 bits) LSb 2002 Microchip Technology Inc. ...

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... This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operation listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability. 2002 Microchip Technology Inc. (except ) ............................................................................ -0.6V to ...

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... T OV Conditions MHz 5.5V OSC DD (During EEPROM programming) In SLEEP mode except = 0.2 V MCLR DD except = 0.85 V MCLR 8 -3 Conditions R = 10K EXT EXT 4.5V < V < 5.5V DD Oscillator components tolerance < 6%. 3V < V < Oscillator components tolerance <10% 2002 Microchip Technology Inc. ...

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Code Word 50 ms RFIN TOD S[3,2,1, Note 2 V LOW T A LRNOUT 0s 1s Note 1: Output is activated as long as code is received. 2: Output is activated if battery low ( V LOW ...

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MCP100-450 V DD LOW VOLTAGE DETECTOR—DO NOT OMIT 10K 4. MCLR OSC IN 15 OSC OUT HCS512 12V 1 ...

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... Standard PICmicro device marking consists of Microchip part number, year code, week code, and traceability code. For PICmicro device marking beyond this, certain price adders apply. Please check with your Microchip Sales Office. For QTP devices, any special marking adders are included in QTP price. 2002 Microchip Technology Inc. Example HCS512 0110017 ...

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... MILLIMETERS MIN NOM MAX 18 2.54 3.56 3.94 4.32 2.92 3.30 3.68 0.38 7.62 7.94 8.26 6.10 6.35 6.60 22.61 22.80 22.99 3.18 3.30 3.43 0.20 0.29 0.38 1.14 1.46 1.78 0.36 0.46 0.56 7.87 9.40 10. 2002 Microchip Technology Inc. ...

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... Mold Draft Angle Top Mold Draft Angle Bottom * Controlling Parameter § Significant Characteristic Notes: Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed .010” (0.254mm) per side. JEDEC Equivalent: MS-013 Drawing No. C04-051 2002 Microchip Technology Inc Units INCHES* ...

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... Microchip's development systems software products. Plus, this line provides information on how customers can receive any currently available upgrade kits.The Hot Line Numbers are: 1-800-755-2345 for U.S. and most of Canada, and 1-480-792-7302 for the rest of the world. 2002 Microchip Technology Inc. ...

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... What deletions from the data sheet could be made without affecting the overall usefulness there any incorrect or misleading information (what and where)? 7. How would you improve this document? 8. How would you improve our software, systems, and silicon products? 2002 Microchip Technology Inc. Total Pages Sent FAX: (______) _________ - _________ N ...

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... Register on our web site (www.microchip.com/cn) to receive the most current information on our products. DS40151D-page Plastic DIP (300 mil Body), 18-lead SO = Plastic SOIC (300 mil Body), 18-lead Blank = 0°C to +70° -40°C to +85°C HCS512 Code Hopping Decoder HCS512T Code Hopping Decoder (Tape and Reel) 2002 Microchip Technology Inc. ...

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... Serialized Quick Turn Programming (SQTP service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. © 2002, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. Printed on recycled paper. Microchip received QS-9000 quality system ...

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... Korea Microchip Technology Korea 168-1, Youngbo Bldg. 3 Floor Samsung-Dong, Kangnam-Ku Seoul, Korea 135-882 Tel: 82-2-554-7200 Fax: 82-2-558-5934 Singapore Microchip Technology Singapore Pte Ltd. 200 Middle Road #07-02 Prime Centre Singapore, 188980 Tel: 65-334-8870 Fax: 65-334-8850 Taiwan Microchip Technology Taiwan 11F-3, No. 207 ...