HCS300T/SN Microchip Technology, HCS300T/SN Datasheet
HCS300T/SN
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HCS300T/SN Summary of contents
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... Microchip Technology Inc. ® Code Hopping Encoder DESCRIPTION The HCS300 from Microchip Technology Inc code hopping encoder designed for secure Remote Keyless Entry (RKE) systems. The HCS300 utilizes the K code hopping technology, incorporating high security, a small package outline and low cost. The HCS300 is a perfect solution for unidirectional remote keyless entry systems and access control systems ...
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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 2001 Microchip Technology Inc. ...
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... HCS300 based transmitter. Section 7.0 provides detail on integrating the HCS300 into a sys- tem. 2001 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. DS21137F-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 2001 Microchip Technology Inc. ...
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... Cathode connection for LED V 8 Positive supply voltage DD 2001 Microchip Technology Inc. The HCS300 will wake-up upon detecting a button press and delay approximately 10 ms for button debounce (Figure 2-2). The synchronization counter, 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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... Shutoff mode will be higher than Standby mode. If the Most Significant bit in the serial number is a one, then the Auto-shutoff timer is enabled, and a zero in the Most Significant bit will disable the timer. The length of the timer is not selectable. the key for 2001 Microchip Technology Inc. ...
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... Should the system designer conclude that is not adequate, then the overflow bits can be utilized to extend the number 2001 Microchip Technology Inc. of unique values. This can be done by programming OVR0 and OVR1 the time of production. The encoder will automatically clear OVR0 the first time that ...
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... Fixed Portion of Header of Transmission Transmission HOP 32 bits of Encrypted Portion Serial Number Button (28 bits) Status Serial Number (28 bits Guard Time T T FIX G OVR DISC Sync Counter (2 bits) (10 bits) (16 bits) LSb 66 Data bits Transmitted LSb first. SEED (32 bits) LSb 2001 Microchip Technology Inc. ...
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... Status MSb 2001 Microchip Technology Inc. The button code will be the S0, S1 value at the falling edge S3. The timing of the PWM data string is controlled by supplying a clock and should not exceed 20 kHz. The code word is the same as in PWM mode with 16 reserved bits at the end of the word ...
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... Instead of the normal key generation inputs being used to create the crypt key, this seed value is used. TABLE 5-1: Standby Hopping Code Seed Code and will be PIN ACTIVATION TABLE Function 2001 Microchip Technology Inc. ...
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... BACW Enabled (1 out of 4 transmitted) 2001 Microchip Technology Inc. ond code word (Figure 5-1). This is a selectable feature that is determined in conjunction with the baud rate selection bit BSL0. Enabling the BACW option may likewise allow the user to transmit a higher amplitude transmission as the time averaged power is reduced ...
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... PNP RF transistors CLKH CLKL Bit 1 Bit 2 Bit 3 Bit 14 Bit 15 Data for Word 0 (KEY_0) Repeat for each word (12 times) Data from Word 0 Bit 0 Bit 1 Bit 2 Bit 3 Bit the Bit 16 Bit 17 Data for Word 1 Bit 15 Bit 16 Bit 17 Bit190 Bit191 2001 Microchip Technology Inc. ...
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... Hold time 1 Hold time 2 Bulk Write time Program delay time 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. 2001 Microchip Technology Inc. Min ...
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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 2001 Microchip Technology Inc. ...
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... No Is Counter No Within 32K ? Yes Save Counter in Temp Location 2001 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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... HCS300 FIGURE 7-3: SYNCHRONIZATION WINDOW Entire Window rotates to eliminate use of previously used codes DS21137F-page 16 Blocked Window (32K Codes) Stored Synchronization Counter Value Double Operation (resynchronization) Single Operation Window Window (32K Codes) (16 Codes) 2001 Microchip Technology Inc. ...
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... Auto-shutoff current specification does not include the current through the input pull-down resistors. 4: These values are characterized but not tested. 5: With V Sel = 0 for operation from 2.0V to 3.0V and V LOW the voltage drop across the terminals of the LED. LED 2001 Microchip Technology Inc. Item Rating -0.3 to 6.6 Input voltage -0 Output voltage -0 ...
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... DS21137F-page 18 Multiple Code Word Transmission Code Code Code Word Word Word (2) Min 10 + Code 26 + Code Word Encrypted Portion Fixed Portion of Header of Transmission Transmission HOP Code Code Word Word Max Unit Remarks ms (Note 1) Word 120 s Guard Time T T FIX G 2001 Microchip Technology Inc. ...
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... Guard Time T G Total Transmit Time — PWM data rate — Note: The timing parameters are not tested but derived from the oscillator clock. 2001 Microchip Technology Inc. P12 10 T Serial Number Button Code LSB MSB S3 S0 Bit 60 Bit 61 Bit 62 Bit 63 Bit 64 Bit 65 ...
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... HCS300 FIGURE 8-5: HCS300 TE VS. TEMP 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1.0 0.9 0.8 0.7 0.6 -50 -40 -30 -20 - DS21137F-page 20 Typical LEGEND = 2.0 T Max 3.0 = 6.0 T Min. E 2001 Microchip Technology Inc. ...
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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. 2001 Microchip Technology Inc. HCS300 Example HCS300 ...
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... MILLIMETERS MIN NOM MAX 8 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 9.14 9.46 9.78 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. 2001 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-012 Drawing No. C04-057 2001 Microchip Technology Inc Units ...
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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. 2001 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? 2001 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. DS21137F-page Plastic DIP (300 mil Body), 8-lead SN = Plastic SOIC (150 mil Body), 8-lead Blank = 0°C to +70° –40°C to +85°C HCS300 = Code Hopping Encoder HCS300T = Code Hopping Encoder (Tape and Reel) 2001 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. © 2001, 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 ...