hcs200 Microchip Technology Inc., hcs200 Datasheet
hcs200
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hcs200 Summary of contents
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... RESET circuit PWM Vss V DD The HCS200 operates over a wide voltage range of 3.5 volts to 13.0 volts and has three button inputs in an 8-pin configuration. This allows the system designer the freedom to implement up to seven functions. The only components required for device operation are the buttons and RF circuitry, allowing a very low system cost ...
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... The encoder portion of a keyless entry system is integrated into a transmitter, carried by the user and operated to gain access to a vehicle or restricted area. The HCS200 is meant cost-effective yet secure solution to such systems, algorithm, requiring very few external components (Figure 2-1). ...
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... As indicated in the block diagram on page one, the HCS200 has a small EEPROM array which must be loaded with several parameters before use; most often programmed by the manufacturer at the time of produc- tion. The most important of these are: • ...
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... HCS200 FIGURE 1-2: BUILDING THE TRANSMITTED CODE WORD (ENCODER) EEPROM Array Crypt Key Sync Counter Serial Number FIGURE 1-3: BASIC OPERATION OF RECEIVER (DECODER) 1 Received Information Button Press Serial Number Information Check for 2 Match Perform Function Indicated by 5 button press NOTE: Circled numbers indicate the order of execution. ...
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... ENCODER OPERATION As shown in Figure 2-1, the HCS200 is a simple device to use. It requires only the addition of buttons and RF circuitry for use as the transmitter in your security appli- cation. A description of each pin is described in Table 2-1. Note: When V > 9.0V and driving low capaci- DD tive loads, a resistor with a minimum value ...
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... HCS200 3.0 EEPROM MEMORY ORGANIZATION The HCS200 contains 192 bits (12 x 16-bit words) of EEPROM memory (Table 3-1). This EEPROM array is used to store the crypt key information, synchronization value, etc. Further descriptions of the memory array is given in the following sections. TABLE 3-1: EEPROM MEMORY MAP WORD ...
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... LOW VOLTAGE TRIP POINT SELECT (V ) LOW SEL The low voltage trip point select bit tells the HCS200 what V level is being used. This information will be DD used by the device to determine when to send the volt- age low signal to the receiver. When this bit is set to a ...
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... HCS200 FIGURE 4-1: CODE WORD FORMAT LOGIC ‘0’ LOGIC ‘1’ Bit Period 50% Duty Cycle Preamble T P FIGURE 4-2: CODE WORD ORGANIZATION 34 bits of Fixed Portion Fixed V Button LOW (1-bit) (1-bit) Status MSb Fixed V Button LOW (1-bit) (1-bit) ...
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... Word Word Word Internal HCS200 : Voltage LOW Indicator bit is included in every transmission Code Word Code Word Code Word DS40138C-page 9 ...
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... HCS200 6.0 PROGRAMMING THE HCS200 When using the HCS200 in a system, the user will have to program some parameters into the device, such as the serial number and crypt key, before it can be used. The programming cycle allows the user to input all 192 bits in a serial data stream, which are then stored inter- nally in EEPROM ...
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... Note 1: Typical values - not tested in production. 2002 Microchip Technology Inc. Min 4.0 PBW T 4.0 PROG CLKL T 50 CLKH — DV HCS200 Max. Units 4.5 ms — ms — s — ms — ms — ms — s — s (1) — s (1) — DS40138C-page 11 ...
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... HCS200 7.0 INTEGRATING THE HCS200 INTO A SYSTEM An HCS200 based system requires a compatible decoder. The decoder is typically a microcontroller with compatible firmware. Microchip provides, via a license agreement, firmware routines that will receive and authenticate HCS200 transmissions. These routines provide designers the means to develop their own decoding system ...
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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. HCS200 technology patent scope includes a DS40138C-page 13 ...
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... HCS200 FIGURE 7-3: SYNCHRONIZATION WINDOW Entire Window rotates to eliminate use of previously used codes DS40138C-page 14 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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... PWM Note: Typical values are at 25°C. 2002 Microchip Technology Inc. 3.5V < V < 13.0V DD Min Typ* Max Unit 0.6 1.0 1.5 3.0 mA 8 0.3 -0 120 160 K HCS200 + 0.3V DD Conditions 13 4.0V IN DS40138C-page 15 ...
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... HCS200 FIGURE 8-1: TYPICAL ICC CURVE OF HCS200 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 DS40138C-page [V] BAT 1K External [V] BAT 2K External [V] BAT LEGEND Typical Maximum Minimum 2002 Microchip Technology Inc. ...
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... Code Code Code Word Word Word (2) Min 10 + Code 26 + Code Word Encrypted Portion Fixed Portion of Header of Transmission Transmission HOP HCS200 Code Code Word Word Max Unit Remarks ms (Note 1) Word 120 s Guard Time T T FIX G DS40138C-page 17 ...
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... HCS200 FIGURE 8-4: CODE WORD FORMAT: PREAMBLE/HEADER PORTION 50% Duty Cycle Preamble E FIGURE 8-5: CODE WORD FORMAT: DATA PORTION LSB MSB Bit 0 Bit 1 Bit 30 Bit 31 Bit 32 Bit 33 Bit 58 Bit 59 Header Encrypted Portion TABLE 8-3: CODE WORD TIMING V = +3.5 to 13.0V DD Commercial(C):Tamb = 0°C to +70°C Industrial(I):Tamb = -40° ...
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... FIGURE 8-6: HCS200 TE VS. TEMP (BY CHARACTERIZATION) 1.7 1.6 1.5 1.4 1.3 1.2 TE 1.1 1.0 0.9 0.8 0.7 0.6 -50 -40 -30 -20 - 2002 Microchip Technology Inc. T Max 3. 5.0V DD Typical Min. E TEMPERATURE °C HCS200 DS40138C-page 19 ...
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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. DS40138C-page 20 Example HCS200 XXXXXNNN 0025 Example HCS200 XXX0025 NNN 2002 Microchip Technology Inc. ...
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... A2 .115 .130 .145 A1 .015 E .300 .313 .325 E1 .240 .250 .260 D .360 .373 .385 L .125 .130 .135 c .008 .012 .015 B1 .045 .058 .070 B .014 .018 .022 § eB .310 .370 .430 HCS200 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. ...
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... HCS200 8-Lead Plastic Small Outline (SN) - Narrow, 150 mil (SOIC Dimension Limits Number of Pins Pitch Overall Height Molded Package Thickness Standoff § Overall Width Molded Package Width Overall Length Chamfer Distance Foot Length Foot Angle Lead Thickness Lead Width ...
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... Conferences for products, Development Systems, technical information and more • Listing of seminars and events 2002 Microchip Technology Inc. HCS200 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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... Telephone: (_______) _________ - _________ Application (optional): Would you like a reply? Y Device: HCS200 Questions: 1. What are the best features of this document? 2. How does this document meet your hardware and software development needs you find the organization of this data sheet easy to follow? If not, why? 4 ...
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... HCS200 PRODUCT IDENTIFICATION SYSTEM To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office. HCS200 - /P Package: Temperature Range: Device: Sales and Support Data Sheets Products supported by a preliminary Data Sheet may have an errata sheet describing minor operational differences and recom- mended workarounds ...
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... HCS200 NOTES: DS40138C-page 26 2002 Microchip Technology Inc. ...
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... Use of Microchip’s products as critical com- ponents in life support systems is not authorized except with express written approval by Microchip. No licenses are con- veyed, implicitly or otherwise, under any intellectual property rights. 2002 Microchip Technology Inc. Trademarks The Microchip name and logo, the Microchip logo, FilterLab ...
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... Centro Direzionale Colleoni Palazzo Taurus Colleoni 1 20041 Agrate Brianza Milan, Italy Tel: 39-039-65791-1 Fax: 39-039-6899883 United Kingdom Arizona Microchip Technology Ltd. 505 Eskdale Road Winnersh Triangle Wokingham Berkshire, England RG41 5TU Tel: 44 118 921 5869 Fax: 44-118 921-5820 01/18/02 2002 Microchip Technology Inc. ...