HCS201/SN Microchip Technology, HCS201/SN Datasheet
HCS201/SN
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HCS201/SN Summary of contents
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... Microchip Technology Inc. ® Code Hopping Encoder DESCRIPTION The HCS201 from Microchip Technology Inc code hopping encoder designed for secure Remote Keyless Entry (RKE) systems. The HCS201 utilizes the K 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 ...
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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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... HCS201 based transmitter. Section 7.0 provides detail on integrating the HCS201 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 1-2). The manufac- turer’ ...
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... NOTE: Circled numbers indicate the order of execution. DS41098C-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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... 390 2N3904 ZHCS400CT (40V 0.4A Zetex) (see Section 5.6 for a description of the Step Up circuit) Note functions can be implemented by pressing more than one button simultaneously or by using a suitable diode array. 2001 Microchip Technology Inc. TABLE 2-1: Pin Pin Name Number ...
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... SYNC 16-bit synchronization value SER_0 Device Serial Number (word 0) SER_1 Device Serial Number (word 1) SEED_0 Seed Value (word 0) SEED_1 Seed Value (word 1) DISC Discrimination Word CONFIG Config Word L algorithm. Inputs creating the key for 2001 Microchip Technology Inc. ...
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... If the discrimi- nation value was programmed as the 12 LSb’s of the 2001 Microchip Technology Inc. HCS201 serial number then it may merely be compared to the respective bits of the received serial number; saving EEPROM space ...
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... S2. 3.7.7 EXTENDED SERIAL NUMBER (XSER) If this bit is set, a long 32-bit Serial Number is transmit- ted. If this bit is cleared, a standard 28-bit Serial Number is transmitted followed by 4 bits of the function code (Button Status). DS41098C-page 8 All 1 out of 2 2001 Microchip Technology Inc. ...
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... Status MSb SEED replaces Encrypted Portion when all button inputs are activated at the same time. 2001 Microchip Technology Inc. 4.2 Code Word Organization The HCS201 transmits a 66-bit code word when a button is pressed. The 66-bit word is constructed from a Fixed Code portion and an Encrypted Code portion (Figure 4-2) ...
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... Transmission mode should not be toggled until all internal processing has been com- pleted as shown in Figure 4-4. Preamble Header Encrypted Portion Serial Number Button (28 bits) Status (12 bits Data DISC Sync Counter (16 bits) 82 Data bits LSb Transmitted LSb first. 2001 Microchip Technology Inc. ...
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... FIGURE 5-1: BLANK ALTERNATE CODE WORD (BACW) Amplitude BRS = 0 A BRS = 1 2A 2001 Microchip Technology Inc. TABLE 5-1: Standby Hopping Code Seed Code 5.5 Blank Alternate Code Word Federal Communications Commission (FCC) part 15 rules specify the limits on worst case average funda- ...
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... DD External components sample values 5 1 Load(mA) Min. Typ. Max. 125 200 250 5.5 6.5 7.5 APPLICATION CIRCUIT STEP out S2 DATA DDB L = 390 2N3904 D = ZHCS400CT (40V 0.4A Zetex) Vddb=2V Vddb=2.5V Vddb=3V Vddb=3.5V 20 Units Conditions kHz DDB 2001 Microchip Technology Inc. ...
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... WC S2 (Clock) Note Verify operation done, then it must immediately follow the Program cycle. 2001 Microchip Technology Inc. Twc. After every 16-bit word is written to the HCS201, the HCS201 will signal that the write is complete by sending out a train of ACK pulses, T low (if the oscillator was perfectly tuned) on DATA. ...
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... Acknowledge low time Acknowledge high time DS41098C-page 14 Min 4 4.0 PBW T 4.0 PROG CLKL T 50 CLKH — DV 100 PHOLD T 800 ACKL T 800 ACKH Max. Units 5.0 ms — ms — s — ms — ms — ms — s — s — s — — s — s — s 2001 Microchip Technology Inc. ...
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... EEPROM during normal opera- tion instead of recalculating it for each transmission received. Certain learning strategies have been patented and care must be taken not to infringe. 2001 Microchip Technology Inc. FIGURE 7-1: Enter Learn Wait for Reception of a Valid Code Generate Key ...
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... This window excludes previously used, perhaps code-grabbed transmissions from accessing the system. Note: The synchronization method described in this section is only a typical implementation and because it is usually implemented in firmware, it can be altered to fit the needs of a particular system. technology patent scope includes a 2001 Microchip Technology Inc. ...
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... FIGURE 7-3: SYNCHRONIZATION WINDOW Entire Window rotates to eliminate use of previously used codes 2001 Microchip Technology Inc. Blocked Window (32K Codes) Stored Synchronization Counter Value Double Operation (resynchronization) Single Operation Window Window (32K Codes) (16 Codes) HCS201 DS41098C-page 17 ...
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... V +0.3 2.75 — 0.15V -0.3 — 0.75 DD — — — — 3.3 0.08V — — — 160 80 120 160 Units (Note 1) C (Note 1) Unit Conditions + 12V 1 2 12V 4. 4.0V DD 2001 Microchip Technology Inc. ...
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... Typical values - not tested in production. FIGURE 8-2: CODE WORD FORMAT LOGIC ‘0’ LOGIC ‘1’ Bit Period T BP 50% Duty Cycle Preamble T P 2001 Microchip Technology Inc. Multiple Code Word Transmission Code Code Code Word Word Word (2) Min. Typ Code Word 12 ...
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... LOW Guard Time 1 out of 2 Min. Typ. Max. Units 180 200 220 s 0.54 0.6 0.66 ms 4.32 4.6 5.28 ms 1.8 2.0 2.2 ms 17.28 19.2 21.12 ms 18.36 20.4 22.44 ms 7.02 7.8 8.58 ms 48.78 54.2 59.62 ms 1851 1667 1515 bps 2001 Microchip Technology Inc. ...
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... Standard OTP marking consists of Microchip part number, year code, week code, facility code, mask rev#, and assembly code. For OTP 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. HCS201 Example ...
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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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... HCS201 NOTES: DS41098C-page 26 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 ...