HCS509 NTQ109 NTQ106 NTQ105 NTQ104 HCS200 HCS300/301 HCS360/361 HCS200/ - Datasheet Archive

 

KEELOQ® Code Hopping Decoder* FEATURES PACKAGE TYPE PDIP, SOIC Security Secure storage of manufacturer's key Secure storage

 

HCS509 HCS509 KEELOQ® Code Hopping Decoder* FEATURES PACKAGE TYPE PDIP, SOIC Security Secure storage of manufacturer's key Secure storage of transmitter's keys NTQ109 NTQ109 compatible learning mode Up to six transmitters Master transmitter supported KEELOQ code hopping technology LRNIN · · · · · · · · · 17 MODE 3 16 OSCIN 4 15 NC GND 5 14 VDD F1 [S0] 6 13 DAT [S3] F2 [S1] 7 12 CLK [S2] F3 8 11 DELAY F1L NTQ109 NTQ109 functional replacement Stand alone decoder On-chip EEPROM for transmitter storage Four binary function outputs­15 functions 18-pin DIP/SOIC package 2 MCLR Other RFIN SEL 3.0V­6.0V operation 4 MHz RC oscillator Learning indication on repeat Auto baud rate detection 18 REPEAT Operating 1 9 10 MASTER HCS509 HCS509 · · · · · · BLOCK DIAGRAM RFIN 67-Bit Reception Register Typical Applications · · · · · · · DECRYPTOR Automotive remote entry systems Automotive alarm systems Automotive immobilizers Gate and garage openers Electronic door locks Identity tokens Burglar alarm systems EEPROM CONTROL OSCIN OSCILLATOR OUTPUT Compatible Encoders · NTQ106 NTQ106, NTQ105 NTQ105, NTQ104 NTQ104 · HCS200 HCS200, HCS300/301 HCS300/301, HCS360/361 HCS360/361 F1 DESCRIPTION The Microchip Technology Inc. HCS509 HCS509 is a code hopping decoder designed for secure Remote Keyless Entry (RKE) systems. The HCS509 HCS509 utilizes the patented KEELOQ code hopping system and high security learning mechanisms to make this a canned solution when used with the HCS encoders to implement a unidirectional remote keyless entry system. F2 F3 DAT [S3] CLK [S2] LRNIN MODE MCLR CONTROL F1L REPEAT MASTER The manufacturer's key, transmitter keys, and synchronization information are stored in protected on-chip EEPROM. The HCS509 HCS509 uses the DAT and CLK inputs to load the manufacturer's key and cannot be read out of the device. The HCS509 HCS509 operates over a wide voltage range of 3.0 volts to 6.0 volts. The decoder employs automatic baud rate detection which allows it to compensate for wide variations in transmitter data rate. The decoder contains sophisticated error checking algorithms to ensure only valid codes are accepted. Keeloq is a trademark of Microchip Technology Inc. *Code hopping patents issued in Europe, U. S. A., and R. S. A. Patents Numbers ­ US: 5,517,187; Europe: 0459781 © 1996 Microchip Technology Inc. Preliminary This document was created with FrameMaker 4 0 4 DS40147A-page 1 HCS509 HCS509 1.0 KEELOQ SYSTEM OVERVIEW 1.2 1.1 Key Terms The HCS encoders have a small EEPROM array which must be loaded with several parameters before use. The most important of these values are: · Manufacturer's Code ­ a 64-bit word, unique to each manufacturer, used to produce a unique encryption key in each transmitter (encoder). · Decryption Key ­ a unique 64-bit key generated or programmed into the decoder. The decryption key controls the encryption algorithm and is stored in EEPROM on the decoder device. · Learn ­ The receiver uses the same information that is transmitted during normal operation to derive the transmitter's secret key, decrypt the discrimination value and the synchronization counter in learning mode to match a transmitter to a receiver. The encryption/decryption key is a function of the manufacturer's key and the device serial number. The HCS encoders and decoders employ the KEELOQ code hopping technology and an encryption algorithm to achieve a high level of security. Code hopping is a method by which the code transmitted from the transmitter to the receiver is different every time a button is pushed. This method, coupled with a transmission length of 66 bits, virtually eliminates the use of code `grabbing' or code `scanning'. FIGURE 1-1: · A 28-bit serial number which is meant to be unique for every encoder · An encryption key that is generated at the time of production · A 16-bit synchronization value The serial number for each encoder is programmed by the manufacturer at the time of production. The generation of the encryption key is done using a key generation algorithm (Figure 1-1). Typically, inputs to the key generation algorithm are the serial number of the encoder and a 64-bit manufacturer's code. The manufacturer's code is chosen by the system manufacturer and must be carefully controlled. The manufacturer's code is a pivotal part of the overall system security. CREATION AND STORAGE OF ENCRYPTION KEY DURING PRODUCTION HCSXXX EEPROM Array Transmitter Serial Number or Seed Manufacturer's Code DS40147A-page 2 HCS Encoder Overview Key Generation Algorithm Serial Number Encryption Key Sync Counter Encryption Key Preliminary . . . © 1996 Microchip Technology Inc. HCS509 HCS509 1.3 The 16-bit synchronization value is the basis for the transmitted code changing for each transmission and is updated each time a button is pressed. Because of the complexity of the code hopping encryption algorithm, a change in one bit of the synchronization value will result in a large change in the actual transmitted code. There is a relationship (Figure 1-2) between the key values in EEPROM and how they are used in the encoder. Once the encoder detects that a button has been pressed, the encoder reads the button and updates the synchronization counter. The synchronization value is then combined with the encryption key in the encryption algorithm, and the output is 32 bits of encrypted information. This data will change with every button press, hence, it is referred to as the hopping portion of the code word. The 32-bit hopping code is combined with the button information and the serial number to form the code word transmitted to the receiver. FIGURE 1-2: HCS Decoder Overview Before a transmitter can be used with a particular receiver, the transmitter must be `learned' by the receiver. Upon learning a transmitter, information is stored by the receiver so that it may track the transmitter, including the serial number of the transmitter, the current synchronization value for that transmitter, and the same encryption key that is used on the transmitter. If a receiver receives a message of valid format, the serial number is checked and, if it is from a learned transmitter, the message is decrypted and the decrypted synchronization counter is checked against what is stored. If the synchronization value is verified, then the button status is checked to see what operation is needed. Figure 1-3 shows the relationship between some of the values stored by the receiver and the values received from the transmitter. BASIC OPERATION OF TRANSMITTER (ENCODER) Transmitted Information KEELOQ Encryption Algorithm EEPROM Array 32 Bits of Encrypted Data Serial Number Button Press Information Encryption Key Sync Counter Serial Number FIGURE 1-3: BASIC OPERATION OF RECEIVER (DECODER) Check for Match EEPROM Array KEELOQ Decryption Algorithm Decryption Key Decrypted Synchronization Counter Sync Counter Serial Number Check for Match Manufacturer Code Button Press Information Serial Number 32-Bits of Encrypted Data Received Information © 1996 Microchip Technology Inc. Preliminary DS40147A-page 3 HCS509 HCS509 2.0 PIN PIN ASSIGNMENT Decoder Function I/O (1) 1 2 3 4 5 6 7 8 9 10 11 12 LRNIN REPEAT SEL MCLR Ground F1 [S0] F2 [S1] F3 F1L MASTER DELAY CLK [S2] I O I I P O O O O O O I/O 13 DAT [S3] Buffer Type(1) Description TTL TTL TTL ST - TTL TTL TTL TTL TTL TTL Learn input - initiates learning, 10K pull-up required on input Repeat output - Indicates repeated codes Connect to VDD Master clear input Ground connection Function 1 output (Also S0) Function 2 output (Also S1) Function 3 output Function 1 latched Master transmitter output Delayed transmission output I/O TTL/ST (2) Clock in programming mode (Also S2 output) (Note 3) TTL/ST(2) Data in programming mode (Also S3 output) (Note 3) 14 VDD P - Power connection 15 NC - - No connection 16 OSCIN (4 MHz) I ST Oscillator in ­ recommended values 10 k and 10pF 17 MODE I TTL Input to select learning or preprogramming mode 18 RFIN I TTL RF input from receiver Note 1: P = power, I = in, O = out, and ST = Schmitt Trigger input. 2: This buffer is a Schmitt Trigger input when used in serial programming mode. 3: Pin 12 and Pin 13 have a dual purpose. During reset these pins are used to determine if programming mode is selected in which case they are the clock and data lines. In normal operation mode these pins are the upper 2-bits of the button code [S3 S2]. DS40147A-page 4 Preliminary © 1996 Microchip Technology Inc. HCS509 HCS509 3.0 DESCRIPTION OF FUNCTIONS 3.3 3.1 Master Transmitter The REPEAT output is activated for 50 ms every time a repeated code is received. The REPEAT output is also used to indicate successful learning. The transmitter should be activated during the first and second steps of learning until the REPEAT output goes high. In learning mode the decoder can be set up so that the first transmitter that is learned becomes the master transmitter. The master transmitter will not be erased when more than the maximum transmitters are learned. The master transmitter can be used to implement higher privileges in a system such as activating learning. When the master transmitter is activated the associated function outputs as well as the MASTER output are activated. To implement a master learn the MASTER output can be inverted to control the LRNIN input. 3.2 3.4 4.0 OUTPUT MAPPING The HCS509 HCS509 supports the NTQ109 NTQ109's output format. These are: F1, F2, F1L, F3, REPEAT, MASTER, and DELAY outputs. Additional to these outputs the HCS509 HCS509 also supports a binary output of the function code [S3 S2 S1 S0] which allows the decoder to use all the button codes of the new HCS encoders (Table 4-1). The delayed mode can be used to implement a function associated with activating a transmitter for an extended period of time such as panic. Delayed mode is handled differently for encoders with delay mode transmission commands (NTQ106 NTQ106, HCS360/361 HCS360/361) than encoders without delay mode transmission commands (HCS200/ HCS200/ 300/301). The DELAY output is activated when a "delay transmission command" is received or when the same transmissions are received consecutively for 4 seconds. Function Code Latched The F1L (Function 1 latched) output can be used to implement a nonvolatile latch function. F1L will change state every time F1 is activated and return to the state it was in after power loss. Delayed Mode FIGURE 4-1: Repeat FUNCTION OUTPUT TABLE DAT[S3] CLK[S2] F3 0001 0 0 0 0010 0 0 0 0011 0 0 1 0100 0 1 0 0101 0 1 0 0110 0 1 0 0111 0 1 0 1000 1 0 0 1001 1 0 0 1010 1 0 0 1011 1 0 0 1100 1 1 0 1101 1 1 0 1110 1 1 0 1111 1 1 0 Note: NC = No Change; T = Toggle. © 1996 Microchip Technology Inc. F2[S1] F1[S0] F1L Description 0 1 0 0 0 1 1 0 0 1 1 0 0 1 1 1 0 0 0 1 0 1 0 1 0 1 0 1 0 1 T NC NC NC NC NC NC NC NC NC NC NC NC NC NC F1 on NTQ109 NTQ109, F1L toggle/Binary output F2 on NTQ109/Binary output F3 on NTQ109/BInary output Binary output [S3 S2 S1 S0] Binary output [S3 S2 S1 S0] Binary output [S3 S2 S1 S0] Binary output [S3 S2 S1 S0] Binary output [S3 S2 S1 S0] Binary output [S3 S2 S1 S0] Binary output [S3 S2 S1 S0] Binary output [S3 S2 S1 S0] Binary output [S3 S2 S1 S0] Binary output [S3 S2 S1 S0] Binary output [S3 S2 S1 S0] Binary output [S3 S2 S1 S0] Preliminary DS40147A-page 5 HCS509 HCS509 5.0 MODE CONFIGURATION 6.0 DECODER OPERATION The HCS509 HCS509 decoder has two modes of operation. The nonlearning mode supports up to 4 transmitters and the learning mode supports up to 6 transmitters. 6.1 Learning a Transmitter to a Receiver The nonlearning mode must be used where transmitters are preprogrammed at the factory and learning capability is not required. In this mode there need not be a relationship between the serial number and the decryption key. The learning mode does not store the decryption key but derives it from the serial number and manufacterer's key each time it is required. In nonlearning mode, the serial number, synchronization counter, and decryption key must be programmed for each transmitter in the system. The manufacturer's key is not required in preprogram mode. In learning mode, the only information that needs to be programmed is the manufacturer's key. Transmitters are learned into the HCS509 HCS509 through the normal learn procedure. The learning mode is selected when the mode pin is low. In order for a transmitter to be used with a decoder, the transmitter must first be `learned'. When a transmitter is learned to a decoder, the decoder stores the serial number and current synchronization value in EEPROM. The decoder must keep track of these values for every transmitter that is learned (Figure 6-1). The maximum number of transmitters that can be learned is five and one master transmitter. The decoder must also store the manufacturer's key in order to learn a transmitter and will typically be the same for all decoders in a system. In learning mode the decoder assigns 6 memory slots. A learning pointer is used to point to the next learning position. The learning pointer can be set up to point to the first (master) memory slot. If LRN_PTR is initialized to the master position, the first transmitter learned will learn in the master position. This transmitter learned into the system will then become the master transmitter. If initialized to the transmitter 1 position, the first transmitter will learn into transmitter 1. Transmitters will be learned into the memory slots until position five is reached. The learning pointer then wraps back to transmitter 1. Transmitters can be erased by repeated learning. However, the master transmitter will be fixed into the system and cannot be erased. FIGURE 6-1: ASSIGNMENT OF MEMORY SLOTS Master Transmitter 1 Transmitter 2 Transmitter 3 Transmitter 4 Transmitter 5 It must be stated that various patents exist on learning strategies and care must be taken not to infringe these patents when using the HCS509 HCS509 in a system. 6.1.1 LEARNING PROCEDURE Learning is activated by taking the LRNIN input low for longer than 32 ms. This input requires an external pullup resistor. The learn input can be either pulled low using a manual learn button or by feeding the MASTER output inverted back to the LRNIN input (Master learn activation). DS40147A-page 6 Preliminary © 1996 Microchip Technology Inc. HCS509 HCS509 To learn a new transmitter to the HCS509 HCS509 decoder, the following sequence is required: 1. 2. 3. 4. 5. 6. FIGURE 6-2: Enter Learn Mode Enter learning mode by pulling LRNIN low for longer than 32 ms. Activate the transmitter until the REPEAT output goes high indicating reception of a valid code. Activate the transmitter a second time until the REPEAT goes high again. The transmitter is now learned into the decoder. Repeat steps 1-4 to learn up to 6 transmitters. Learning will be terminated if two non-sequential codes were received or if two acceptable codes were not decoded within 30 seconds. Wait for Reception of a Valid Code Generate Key from Serial Number Use Generated Key to Decrypt Wait for Reception of Second Non-Repeated Valid Code The following checks are performed on the decoder to determine if the transmission is valid during learn: · The first code word is checked for bit integrity. · The hopping code is decrypted. · The discrimination value is compared to the serial number. · The second code word is checked for bit integrity. · The hopping code is decrypted. · The function codes of the first transmission and second transmission are compared. · The synchronization counters of the hopping codes are compared to check that they are sequential codes. · If all the checks pass, the serial number and synchronization counters are stored in EEPROM memory. Figure 6-2 shows a flow chart of the learn sequence. Note: Whenever a transmission with the same serial number as the Master transmitter is received during learn, learn will ignore the transmission and wait for the next. Only if a serial number other than the master serial number is received will learn continue. Learn will terminate if no transmissions are received for more than 30 seconds. LEARN SEQUENCE Use Generated Key to Decrypt Compare Discrimination Value with Serial Number Equal ? No Yes Counters Sequential ? Yes No Learn successful Store: Learn Unsuccessful Serial number Synchronization counter Exit 6.2 Preprogramming Transmitters into the Decoder in Nonlearning Mode The nonlearning mode is selected when the mode pin is high. This mode can be used where there is no relationship between the serial number and the decryption key or where the relationship is not the relationship used on the NTQ109 NTQ109. Transmitter information can be programmed at the time of manufacture. This does not allow the learning of additional transmitters at a later stage. © 1996 Microchip Technology Inc. Preliminary DS40147A-page 7 HCS509 HCS509 6.3 Validation of Codes 6.4 The HCS509 HCS509 is a single chip functional replacement for the NTQ109 NTQ109 and NTQ106 NTQ106 decoder chipset. The HCS509 HCS509 treats all transmitters as NTQ104/105/106 NTQ104/105/106 equivalent transmitters. This means that the full code (66- or 67-bits) is received but only 56 bits are interpreted. Serial numbers are truncated to 24 bits to be compatible with the NTQ104/105/106 NTQ104/105/106. In a typical decoder operation (Figure 6-3), the key generation on the decoder side is done by taking the serial number from a transmission and combining that with the manufacturer's key to create the same secret key that was used by the transmitter. Once the secret key is obtained, the rest of the transmission can be decrypted. The decoder waits for a transmission and checks the serial number to determine if it is a learned transmitter. If it is, it takes the encrypted portion of the transmission and decrypts it using the decryption key. It uses the discrimination bits to determine if the decryption was valid. If everything up to this point is valid, the synchronization value is evaluated. Validation Steps Validation consists of the following steps: · Search EEPROM to find the Serial Number Match · Decrypt the Hopping Code · Compare the User Bits and the 8 bits of discrimination value with the lower 8 bits of serial number · Check if the synchronization counter falls within the first synchronization window. · Check if the synchronization counter falls within the second synchronization window. · If a valid transmission is found, update the synchronization counter, else use the next transmitter block and repeat the tests. FIGURE 6-3: DECODER OPERATION Start No Transmission Received ? Yes Does Serial Number Match ? Yes Decrypt Transmission No No Is Decryption Valid ? Yes Is Counter Within 16 ? Yes Execute Command and Update Counter No No Is Counter Within 32K ? Yes Save Counter in Temp Location DS40147A-page 8 Preliminary © 1996 Microchip Technology Inc. HCS509 HCS509 6.5 7.0 Synchronization with Decoder The KEELOQ technology features a sophisticated synchronization technique (Figure 6-4) which does not require the calculation and storage of future codes. If the stored counter value for that particular transmitter and the counter value that was just decrypted are within a formatted window of 16, the counter is stored and the command is executed. If the counter value was not within the single operation window, but is within the double operation window of 32K window, the transmitted synchronization value is stored in temporary location, and it goes back to waiting for another transmission. When the next valid transmission is received, it will check the new value with the one in temporary storage. If the two values are sequential, it is assumed that the counter had just gotten out of the single operation `window', but is now back in sync, so the new synchronization value is stored and the command executed. If a transmitter has somehow gotten out of the double operation window, the transmitter will not work and must be relearned. Since the entire window rotates after each valid transmission, codes that have been used are part of the `blocked' (32K) codes and are no longer valid. This eliminates the possibility of grabbing a previous code and retransmitting to gain entry. FIGURE 6-4: INTEGRATING THE HCS509 HCS509 INTO A SYSTEM The HCS509 HCS509 can act as a stand alone decoder or be interfaced to a microcontroller. Typical stand alone applications include garage door openers and electronic door locks. In stand alone applications the HCS509 HCS509 will handle learning, reception, decryption and validation of the received code and generate the appropriate output. For a garage door opener the HCS509 HCS509 input will be connected to a RF receiver and the output to a relay driver to connect a motor controller. Typical systems where the HCS509 HCS509 will be connected to a microcontroller include vehicle and home security systems. The HCS509 HCS509 input will be connected to a RF receiver and the function outputs to the microcontroller. The HCS509 HCS509 will handle all the decoding functions and the microcontroller all the system functions. SYNCHRONIZATION WINDOW Entire Window rotates to eliminate use of previously used codes Blocked (32K Codes) Current Position Double Operation (32K Codes) Single Operation Window (16 Codes) © 1996 Microchip Technology Inc. Preliminary DS40147A-page 9 HCS509 HCS509 8.0 DIFFERENCES BETWEEN NTQ109 NTQ109 AND THE HCS509 HCS509 For those users familiar with the NTQ109 NTQ109, Table 8-1 lists the differences between the NTQ109 NTQ109 and the HCS509 HCS509 decoders. TABLE 8-1: DIFFERENCES Item Differences Reason 1 Added binary button outputs. For F1, F2, and F3 function codes the HCS509 HCS509 will function similarly to the NTQ109 NTQ109, but for F4 and higher the HCS509 HCS509 displays the binary value of the received function code [S3 S2 S1 S0] by using the F1, F2, DAT, and CLK lines of the HCS509 HCS509. Learn Mode Pin. This enable the user to select between to modes of operation for the HCS509 HCS509. The first, allows a maximum of six transmitters but then only the normal Keygen learn method is allowed. The second, allows the user to use a different learning method but requires that the transmitters be preprogrammed into EEPROM using the factory programming interface. In this mode a maximum of four transmitters are allowed. This feature is added to enable the use of all the button codes of the new HCSXXX encoders. The HCS509 HCS509 has an added test after reset to determine whether programming mode should be entered or not. This interface is used to initialize the HCS509 HCS509's learn pointer, manufacturer's key and transmitter memory blocks. Automatic Delay Function activation. If a repeated transmission is received for 4 seconds after the function output was activated an automatic delay function will be activated. The HCS509 HCS509 has internal EEPROM memory, and the only access to it is through a factory programming interface. Therefore, to initialize the HCS509 HCS509 it is necessary to check for the factory programming activation sequence after reset. The HCS200/300 HCS200/300's decoders don't have a delay function option, and to enable these transmitters to emulate the delay function, normally used as a panic, this feature was added. 2 3 4 DS40147A-page 10 The HCS509 HCS509 the decoder uses two memory mappings. In the first mode the decryption key is not stored but derived whenever required, and in the second the decryption key is read from EEPROM and then used. Preliminary © 1996 Microchip Technology Inc. HCS509 HCS509 9.0 KEELOQ ENCODERS 9.2 9.1 Transmission Format (PWM) The HCSXXX encoder transmits a 66/67-bit code word when a button is pressed. The 66/67-bit word is constructed from a Fixed Code portion and an Encrypted Code portion (Figure 9-2). The KEELOQ encoder transmission is made up of several parts (Figure 9-1). Each transmission begins with a preamble and a header, followed by the encrypted and then the fixed data. The actual data is 56/66/67 bits which consists of 32 bits of encrypted data and 24/34/ 35 bits of non-encrypted data. Each transmission is followed by a guard period before another transmission can begin. The encrypted portion provides up to four billion changing code combinations and includes the button status bits (based on which buttons were activated) along with the synchronization counter value and some discrimination bits. The non-encrypted portion is comprised of the status bits, the function bits, and the 24/28-bit serial number. The encrypted and non-encrypted combined sections increase the number of combinations to 7.38 x 1019. FIGURE 9-1: Code Word Organization The Encrypted Data is generated from four button bits, two overflow counter bits, ten discrimination bits, and the 16-bit synchronization value. The Non-encrypted Data is made up from 2 status bits, 4 function bits, and the 28/32-bit serial number. CODE WORD TRANSMISSION FORMAT LOGIC `0' LOGIC `1' Bit Period Header TH Preamble TP FIGURE 9-2: Fixed Portion of Transmission TFIX Encrypted Portion of Transmission THOP CODE WORD ORGANIZATION Non-encrypted Data Repeat CRC1* Guard Time TG CRC0* 3/2 bits Vlow (1 bit) + Encrypted Data Button Status (4 bits) Button Status (4 bits) 28-bit Serial Number Serial Number and Button Status (32 bits) + Discrimination bits (12 bits) 16-bit Sync Value 32 bits of Encrypted Data 66/67 bits of Data Transmitted *HCS360/361 HCS360/361 © 1996 Microchip Technology Inc. Preliminary DS40147A-page 11 HCS509 HCS509 10.0 ELECTRICAL CHARACTERISTICS FOR HCS509 HCS509 Absolute Maximum Ratings Ambient temperature under bias. -55°C to +125°C Storage temperature . -65°C to +150°C Voltage on any pin with respect to VSS (except VDD). -0.6V to VDD +0.6V Voltage on VDD with respect to Vss. 0 to +7.5V Total power dissipation (Note 1) . 800 mW Maximum current out of VSS pin . 150 mA Maximum current into VDD pin . 100 mA Input clamp current, Iik (VI < 0 or VI > VDD) .± 20 mA Output clamp current, IOK (V0 < 0 or V0 >VDD) .± 20 mA Maximum output current sunk by any I/O pin. 25 mA Maximum output current sourced by any I/O pin. 20 mA Note: Power dissipation is calculated as follows: Pdis = VDD x {IDD - IOH} + {(VDD­VOH) x IOH} + (VOl x IOL) NOTICE: Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operation listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability. DS40147A-page 12 Preliminary © 1996 Microchip Technology Inc. HCS509 HCS509 TABLE 10-1: DC CHARACTERISTICS DC CHARACTERISTICS Symbol VDD VPOR SVDD Characteristic Supply Voltage VDD start voltage to ensure Reset VDD rise rate to ensure Reset Supply Current Standard Operating Conditions (unless otherwise stated) Operating temperature -40°C TA +85°C for industrial and 0°C TA +70°C for commercial Min Typ() Max Units Conditions 3.0 - 6.0 V - VSS - V 0.05* - - V/ms - 1.8 4.5 mA FOSC = 4 MHz, VDD = 5.5V - 7.3 10 mA (During EEPROM programming) Input Low Voltage VSS - 0.16 VDD V except MCLR = 0.2 VDD Input High Voltage 0.48 VDD - VDD V except MCLR = 0.85 VDD Output Low Voltage - - 0.6 V IOL = 8.5 mA, VDD = 4.5V Output High Voltage VDD - 0.7 - - V IOH = -3.0 mA, VDD = 4.5V Data in "Typ" column is at 5.0V, 25°C unless otherwise stated. These parameters are for design guidance only and are not tested. These parameters are characterized but not tested. Negative current is defined as coming out of the pin. IDD VIL VIH VOL VOH * Note: TABLE 10-2: Symbol FOSC FBAUD TOD TA TRPT TLRN TMCLR TOV AC CHARACTERISTICS Characteristic Oscillator frequency Auto baudrate range Output delay Output activation time REPEAT activation time LRNIN activation time MCLR low time Time output valid Min Typ Max Units 2.7 500 48 322 32 21 150 - 4 - 75 500 50 32 - 150 6.21 3200 237 740 74 - - 222 MHz bps ms ms ms ms ns ms Conditions Rext=10K, Cext=10pF FIGURE 10-1: RESET WATCHDOG TIMER, OSCILLATOR START-UP TIMER AND POWER-UP TIMER TIMING VDD MCLR TMCLR TOV I/O Pins © 1996 Microchip Technology Inc. Preliminary DS40147A-page 13 DS40147A-page 14 Preliminary Note 1: 2: 3: 4: DELAY HCSXXX DELAY NTQXXX REPEAT F1L MASTER F1/F2/F3 RFIN T RPT Note 1 1s 2s Output is activated if master transmitter is detected. F1L will change state every time F1 is activated. Output is activated when delay command is received from encoder. Output is activated if HCSXXX transmission is received from more than 4 seconds. 0s TA TA Note 2 TOD 1 Code Word 50ms 3s 4s Note 3 TA Note 4 5s HCS509 HCS509 FIGURE 10-2: OUTPUT ACTIVATION © 1996 Microchip Technology Inc. VDD VI G N D © 1996 Microchip Technology Inc. Preliminary 10 pF 10K VO P1 V VDD HCS509 HCS509 15 NC 5 G N D 3 SEL 16 OSC1 D D 4 MCLR 1K LOW VOLTAGE DETECTOR 17 18 1 2 F1[S0] 6 F2[S1] 7 F3 8 F1L 9 MASTER10 MASTER10 DELAY 11 CLK 12 DAT 13 NC RFIN LRNIN REPEAT 14 LEARN INIT 10K VDD 1 1 2 3 RF INPUT GND 12V 10K P2 100 µF 10K P3 POWER SUPPLY 1N4004/7 1N4004/7 1K 1K 1K 1K 1K 1K 1K VI VO P1 P2 P3 DELAY MASTER F1L F3 F2 F1 REPEAT 100µF VDD Programming Pads G N D LM7805 LM7805 HCS509 HCS509 FIGURE 10-3: TEST CIRCUIT DS40147A-page 15 HCS509 HCS509 HCS509 HCS509 Product Identification System To order or to obtain information, e.g., on pricing or delivery, please use the listed part numbers, and refer to the factory or the listed sales offices. HCS509 HCS509 - /P Package: P = DIP (300 mil Body), 18-lead SN = SOIC (300 mil body), 18-lead Temperature Range: Device: Blank = 0°C to +70°C I = -40°C to +85°C HCS509 HCS509 HCS509T HCS509T Code Hopping Decoder Code Hopping Decoder (Tape and Reel) AMERICAS AMERICAS (continued) EUROPE Corporate Office Microchip Technology Inc. 2355 West Chandler Blvd. Chandler, AZ 85224-6199 Tel: 602 786-7200 Fax: 602 786-7277 Technical Support: 602 786-7627 Web: http://www.microchip.com Atlanta Microchip Technology Inc. 500 Sugar Mill Road, Suite 200B Atlanta, GA 30350 Tel: 770 640-0034 Fax: 770 640-0307 Boston Microchip Technology Inc. 5 Mount Royal Avenue Marlborough, MA 01752 Tel: 508 480-9990 Fax: 508 480-8575 Chicago Microchip Technology Inc. 333 Pierce Road, Suite 180 Itasca, IL 60143 Tel: 708 285-0071 Fax: 708 285-0075 Dallas Microchip Technology Inc. 14651 Dallas Parkway, Suite 816 Dallas, TX 75240-8809 Tel: 214 991-7177 Fax: 214 991-8588 Dayton Microchip Technology Inc. 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Hong Kong Tel: 852 2 401 1200 Fax: 852 2 401 3431 Korea Microchip Technology 168-1, Youngbo Bldg. 3 Floor Samsung-Dong, Kangnam-Ku, Seoul, Korea Tel: 82 2 554 7200 Fax: 82 2 558 5934 Singapore Microchip Technology 200 Middle Road #10-03 Prime Centre Singapore 188980 Tel: 65 334 8870 Fax: 65 334 8850 Taiwan Microchip Technology 10F-1C 10F-1C 207 Tung Hua North Road Taipei, Taiwan, ROC Tel: 886 2 717 7175 Fax: 886 2 545 0139 JAPAN Microchip Technology Intl. Inc. Benex S-1 6F 3-18-20, Shin Yokohama Kohoku-Ku, Yokohama Kanagawa 222 Japan Tel: 81 45 471 6166 Fax: 81 45 471 6122 6/14/96 All rights reserved. © 1996, Microchip Technology Inc., USA, 7/196 Information contained in this publication regarding device applications and the like is intended for suggestion only and may be superseded by updates. No representation or warranty is given and no liability is assumed by Microchip Technology Incorporated with respect to the accuracy or use of such information, or infringement of patents or other intellectual property rights arising from such use, or otherwise. Use of Microchip's products as critical components in medical devices is not authorized except with express written approval by Microchip. No licenses are conveyed, implicitly or otherwise, under any intellectual property rights. The Microchip logo and name are registered trademarks of Microchip Technology Inc. in the USA and other countries. All rights reserved. All other trademarks mentioned herein are the property of their DS40147A-page 16 Preliminary © 1996 Microchip Technology Inc.