HCS361/P Microchip Technology, HCS361/P Datasheet
HCS361/P
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HCS361/P Summary of contents
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... Automotive alarm systems • Automotive immobilizers • Gate and garage door openers • Identity tokens • Burglar alarm systems 2002 Microchip Technology Inc. ® Code Hopping Encoder DESCRIPTION The HCS361 is a code hopping encoder designed for secure Remote Keyless Entry (RKE) systems. The ...
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... A block cipher based on a block length of 32 bits and a key length of 64 bits is used. The algorithm obscures the information in such a way that even if the transmission information (before coding) differs by only one bit from that of the previous transmission, the next L product family facil technol 2002 Microchip Technology Inc. ...
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... HCS361 based transmitter. Section 7.0 provides detail on integrating the HCS361 into a sys- tem. 2002 Microchip Technology Inc. The crypt key generation typically inputs the transmitter serial number and 64-bit manufacturer’s code into the key generation algorithm (Figure 1-1). The manufac- turer’ ...
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... NOTE: Circled numbers indicate the order of execution. DS40146E-page Encryption Algorithm Button Press Serial Number Information Transmitted Information EEPROM Array 32 Bits of Manufacturer Code Encrypted Data Serial Number Sync Counter Crypt Key Decryption Algorithm Decrypted Check for Synchronization 4 Match Counter 32 Bits Encrypted Data 2002 Microchip Technology Inc. ...
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... The HCS361 will wake-up upon detecting a button press and delay approximately 10 ms for button debounce (Figure 2-2). The synchronization counter, 2002 Microchip Technology Inc. discrimination value and button information will be encrypted to form the hopping code. The hopping code portion will change every transmission, even if the same button is pushed again ...
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... SER_0 and SER_1 are the lower and upper words of the device serial number, respectively. There are 32 bits allocated for the Serial Number and a selectable configuration bit determines whether bits will be transmitted. The serial number is meant to be unique for every transmitter. the key for 2002 Microchip Technology Inc. ...
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... In PWM mode, this bit selects the bit format. If TXWAK = 0, the PWM pulse duty cycle is 1/3-2/3. If TXWAK = 1, the PWM pulse duty cycle is 1/6-2/6. 2002 Microchip Technology Inc. HCS361 In VPWM mode, this bit enables the wake-up signal. If TXWAK = 0, transmissions start normally with the preamble portion of the code word ...
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... Button 28-bit Status Serial Number (4 bits) Encrypted Portion of Transmission Discrimination Button 32-bit Status (4 bits) Discrimination Bits (12 bits encoders its value is user EE OQ 16-bit bits Sync Value (12 bits) LSB 67 bits of Data Transmitted 16-bit bits Sync Value (12 bits) LSB ... ... ... ... 0 2002 Microchip Technology Inc. ...
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... The number of transmissions before seed trans- mission is disabled, can be programmed by setting the synchronization counter (SYNC_A or SYNC_B value as shown in Table 3-4. 2002 Microchip Technology Inc. mation (SEED_0, SEED_1, and SEED_2) and the upper bits of the serial number (SER_1)are transmitted instead of the hop code. ...
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... TIMO = 0, will enable continuous transmission (Table 3-5). Maximum Number of Code Words Transmitted 256 512 256 512 Time Before Delay Mode (MOD = 0) 2.8s 2.9s 2.6s 2.8s Time Before Time-out (MOD = 0) 25.6s 27.2s 23.8s 25.4s 2002 Microchip Technology Inc. ...
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... Table 3-2. TABLE 3-2: FUNCTION CODES Note 1: IR mode 2002 Microchip Technology Inc. TABLE 3- 400us 200us 100us S0 IND = 0 IND = 1 Counter SEED = 1, transmit seed after delay SEED = 1, transmit seed immediately ( ( ( (1) B HCS361 IR MODULATION Basic Pulse (400 s) (16x) Period = 25 s ...
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... Fixed Guard Preamble Header Encrypt Duty Cycle: 1/3-2/3 (TXWAK=0) Duty Cycle: 1/6-2/6 (TXWAK=1) 10 SPM=1 SPM=0 10xT Header Encrypted Portion Sync E E Pulse Code Word LOW T E LOGIC 0 LOGIC LOGIC 0 LOGIC Guard Fixed Code Portion Time 2002 Microchip Technology Inc. ...
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... VPWM TRANSMISSION FORMAT (MOD = 1) VPWM TRANSMISSION SEQUENCE: WAKE-UP (TXWAK=1) Preamble Header Encrypt Fixed Dead Time WAKE-UP 33% Duty Cycle Wake-Up sequence 250xT VPWM BIT ENCODING: CODE WORD 18xT Preamble 10xT E 2002 Microchip Technology Inc. 1st CODE WORD Guard LOGIC Transition Low to High LOGIC 0 T ...
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... Work around: If the CRC calculation is incor- rect, recalculate for the opposite value LOW Code Word Code Word Code Word Time CRC Calculation = CRC CRC 0 Di CRC CRC trip LOW is LOW is transmitted (PWM is high). LOW being used for the CRC calculation Code Word 2002 Microchip Technology Inc. ...
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... Two voltage indications are combined into one bit Table 5-1 indicates the operation value LOW of V while data is being transmitted. LOW 2002 Microchip Technology Inc. FIGURE 5-2: 4.5 V LOW 4 3.5 V ...
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... Bit 14 Bit 15 T CLKH DH Data for Word 0 (KEY_0) Repeat for each word Data from Word0 Bit 0 Bit 1 Bit 2 Bit 3 Bit After the first WC Acknowledge Pulse T WC Bit 14 Bit 15 Bit 16 Bit 17 Data for Word 1 Bit 15 Bit 16 Bit 17 Bit190 Bit191 2002 Microchip Technology Inc. ...
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... Parameter Symbol Program mode setup time Hold time 1 Program cycle time Clock low time Clock high time Data setup time Data hold time Data out valid time Note 1: Typical values - not tested in production. 2002 Microchip Technology Inc. Min 9 CLKL T 50 ...
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... Second Valid Code Use Generated Key to Decrypt Compare Discrimination Value with Fixed Value algorithm is a Counters Sequential Learn successful Store: Serial number Encryption key Synchronization counter TYPICAL LEARN SEQUENCE No Equal ? Yes No Equal ? Yes No ? Yes Learn Unsuccessful Exit 2002 Microchip Technology Inc. ...
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... No Is Counter No Within 32K ? Yes Save Counter in Temp Location 2002 Microchip Technology Inc. 7.3 Synchronization with Decoder (Evaluating the Counter) The sophisticated synchronization technique that does not require the calculation and storage of future codes. The technique securely blocks invalid transmissions while providing transparent resynchronization to transmitters inadvertently activated away from the receiver ...
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... HCS361 FIGURE 7-3: SYNCHRONIZATION WINDOW Entire Window rotates to eliminate use of previously used codes DS40146E-page 20 Blocked Window (32K Codes) Stored Synchronization Counter Value Double Operation (resynchronization) Single Operation Window Window (32K Codes) (16 Codes) 2002 Microchip Technology Inc. ...
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... Note 1: Typical values are Auto-shutoff current specification does not include the current through the input pull-down resistors. 3: Auto-shutoff current is periodically sampled and not 100% tested the voltage between the V LED 2002 Microchip Technology Inc. Item Rating -0.3 to 6.9 Input voltage -0 Output voltage -0 ...
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... The Auto-shutoff time-out period is not tested. DS40146E-page 22 Multiple Code Word Transmission Code Code Code Word Word Word Symbol Min Max Code 26 + Code BP Word Time Word Time T 4 Code Code Word Word 4 n Unit Remarks ms (Note 1) ms (Note (Note 3) 2002 Microchip Technology Inc. ...
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... Preamble E FIGURE 8-4: PWM DATA FORMAT (MOD=0) LSB MSB LSB Bit 0 Bit 1 Bit 30 Bit 31 Bit 32 Bit 33 Encrypted Portion Header of Transmission 2002 Microchip Technology Inc. Duty Cycle: 1/3-2/3 (TXWAK=0) Duty Cycle: 1/6-2/6 (TXWAK=1) 10 SPM=1 SPM=0 10xT Header Encrypted Portion Sync E E Pulse ...
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... The bit values are only shown as an example. DS40146E-page 24 1st CODE WORD Fixed Guard 10xT Header Encrypted Portion Sync E E Code Word LOGIC LOGIC Serial Number Preamble Sync Encrypt Dead Time 258xT E Guard Fixed Code Portion Time V LOW Function Code CRC 2002 Microchip Technology Inc. ...
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... FIGURE 8-9: HCS361 NORMALIZED TE VS. TEMP 1.7 1.6 1.5 1.4 1.3 1 1.1 1.0 0.9 0.8 0.7 0.6 -50 -40 -30 -20 - 2002 Microchip Technology Inc. Typical T Max LEGEND DD = 2.0V = 3.0V = 6.0V T Min. E Temperature °C HCS361 DS40146E-page 25 ...
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... BSEL = 1 Typ. Max. Units 200 310 105 283 T E 56.6 87.7 ms 1667 1075 bps BSEL = 1 Typ. Max. Units 100 155 192 T E 210 516 T E 51.6 79.9 ms 1667 1075 bps 2002 Microchip Technology Inc. ...
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... Fixed code duration FIX T Guard Time G Total Transmit Time Total Transmit Time VPWM data rate Note: The timing parameters are not tested but derived from the oscillator clock. 2002 Microchip Technology Inc. Code Words Transmitted Shortest Min Typ. Max. Min. 260 400 620 ...
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... 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. DS40146E-page 28 Example HCS361 XXXXXNNN 0025 Example HCS361 XXX0025 NNN 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-001 Drawing No. C04-018 2002 Microchip Technology Inc ...
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... B .013 .017 .020 MILLIMETERS MIN NOM MAX 8 1.27 1.35 1.55 1.75 1.32 1.42 1.55 0.10 0.18 0.25 5.79 6.02 6.20 3.71 3.91 3.99 4.80 4.90 5.00 0.25 0.38 0.51 0.48 0.62 0. 0.20 0.23 0.25 0.33 0.42 0. 2002 Microchip Technology Inc. ...
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... Microchip Products • Conferences for products, Development Systems, technical information and more • Listing of seminars and events 2002 Microchip Technology Inc. HCS361 Systems Information and Upgrade Hot Line The Systems Information and Upgrade Line provides system users a listing of the latest versions of all of Microchip's development systems software products ...
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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? DS40146E-page 32 Total Pages Sent FAX: (______) _________ - _________ N Literature Number: DS40146E 2002 Microchip Technology Inc. ...
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... Please specify which device, revision of silicon and Data Sheet (include Literature #) you are using. New Customer Notification System Register on our web site (www.microchip.com/cn) to receive the most current information on our products. 2002 Microchip Technology Inc Plastic DIP (300 mil Body), 8-lead SN = Plastic SOIC (150 mil Body), 8-lead Blank = 0° ...
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... HCS361 NOTES: DS40146E-page 34 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 ...