HCS301/P Microchip Technology, HCS301/P Datasheet
HCS301/P
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HCS301/P Summary of contents
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... Microchip Technology Inc. ® Code Hopping Encoder OQ DESCRIPTION The HCS301 from Microchip Technology Inc code hopping encoder designed for secure Remote Keyless Entry (RKE) systems. The HCS301 utilizes the K code hopping technology, which incorporates high security, a small package outline and low cost, to make this device 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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... HCS301 based transmitter. Section 7.0 provides detail on integrating the HCS301 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. DS21143B-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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... LED S2 PWM (1) 5 button remote control Note functions can be implemented by pressing more than one button simultaneously or by using a suitable diode array. 2: Resistor R is recommended for current limiting. 2001 Microchip Technology Inc. TABLE 2-1: Pin Name Number PWM LED V DD The HCS301 will wake-up upon detecting a button press and delay approximately 10 ms for button debounce (Figure 2-2) ...
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... MSb’s SYNC 16-bit synchronization value SER_0 Device Serial Number (word 0) LSb’s (word 1) MSb’s SEED_0 Seed Value (word 0) SEED_1 Seed Value (word 1) CONFIG Config Word L algorithm. Inputs creating the key for 2001 Microchip Technology Inc. ...
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... Figure 4-2). This allows the system designer to imple- ment the secure learn feature or use this fixed code word as part of a different key generation/tracking pro- cess. 2001 Microchip Technology Inc. HCS301 3.6 CONFIG (Configuration Word) The Configuration Word is a 16-bit word stored in ...
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... This information V DD level is assumed to be operating from a level. If the bit is set low, then the level V DD VOLTAGE TRIP POINTS BY CHARACTERIZATION V LOW V sel = 0 LOW Max Min V sel = 1 LOW Max Min -40 - 100 Temp (C) 2001 Microchip Technology Inc. ...
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... Status MSb Note: SEED replaces Encrypted Portion when all button inputs are activated at the same time. 2001 Microchip Technology Inc. 4.2 Code Word Organization The HCS301 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 DISC+ OVR (28 bits) Status (12 bits Data Sync Counter (16 bits) 82 Data bits LSb Transmitted LSb first. 2001 Microchip Technology Inc. ...
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... Section 3.4.1). Setting this bit high will enable the func- tion (turn Auto-shutoff function on) and setting the bit low will disable the function. Time-out period is approx- imately 25 seconds. 2001 Microchip Technology Inc. HCS301 5.6 Seed Transmission In order to increase the level of security in a system possible for the receiver to implement what is known as a secure learn function ...
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... BACW effectively halves the RF on time for a given transmission so the RF out- put power could theoretically be doubled while main- taining the same time averaged output power. Code Word Code Word Code Word Time Code Word 2001 Microchip Technology Inc. ...
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... WC S2 (S3) (Clock) Note Verify operation done, then it must immediately follow the Program cycle. 2001 Microchip Technology Inc. programming delay is required for the internal program cycle to complete. This delay can take end of the programming cycle, the device can be veri- fied (Figure 6-2) by reading back the EEPROM. Read- ing is done by clocking the S2 (or S3) line and reading the data bits on PWM ...
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... Data hold time Data out valid time Note 1: Typical values - not tested in production. DS21143B-page 14 Min 4.0 PBW T 4.0 PROG CLKL T 50 CLKH — DV Max. Units 4.5 ms — ms — s — ms — ms — ms — s — s — (1) s — ( (1) 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) HCS301 DS21143B-page 17 ...
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... Max Unit 0.6 1.0 1.5 3.0 mA 8 0.3 -0 3.5 4.7 5.9 mA 2.7 3.7 4 120 160 k Units 0 °C (Note) °C (Note) V Conditions 13.0V DD (Figure 8- 6.6V, V source = 0 DD LOW V = 13.0V, V source = 1 DD LOW 4.0V IN 2001 Microchip Technology Inc. ...
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... FIGURE 8-1: TYPICAL ICC CURVE OF HCS301 WITH EXTERNAL RESISTORS 12.0 10.0 8.0 6.0 4.0 2.0 0 12.0 10.0 8.0 6.0 4.0 2.0 0 12.0 10.0 8.0 6.0 4.0 2.0 0 2001 Microchip Technology Inc. 50 External [V] BAT 1 External [V] BAT 2 External [V] BAT HCS301 LEGEND Typical Maximum ...
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... DS21143B-page 20 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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... HCS301 FIGURE 8-6: HCS301 TE VS. TEMP (BY CHARACTERIZATION ONLY) 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 - DS21143B-page 3. 5. 5.0V DD Typical Min. E TEMPERATURE 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. HCS301 Example HCS301 ...
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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. DS21143B-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 HCS301 = Code Hopping Encoder HCS301T = 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 ...