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Table of contents Constitution of the Radio Frequency Keyless Entry system Controllerfor vehicle ,,,,, User's manual (provisionally) ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, Block diagram ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, Specification ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, Features ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, PCB ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, 6.1 Circuit diagram ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, 6.2 Parts layout ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, 6.3 Parts list ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, Photographs ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, Operation Guide This device complies with part 15 of the FCC Rules.
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1. Constitution of the Radio Frequency Keyless Entry System for vehicle The radio frequency keyless entry is a system that it controls locking and unlocking the door and the trunk by wireless remote controller. This system consists of three components. The TRANSMITTER is a device that transmits the signal when the button is pressed.
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2. User's manual (provisionally) REMOTE TRANSMITTER LOCK UNLOCK PANIC (? ? ) You can lock and unlock your vehicle with the remote transmitter. LOCK When you push the LOCK button, all the doors will lock. You cannot lock any of the doors with the remote transmitter if any door is open or the key is the ignition switch.
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3. Block diagram This is block diagram concerning to the transmitter 9.846876MHz 4.19MHz figure 3.1 block diagram of the transmitter...
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4. Specification 4.1 CPU Type uPD789860-xxx(8bit) Manufacturer : NEC Corporation 4 Kbytes 128 bytes EEPROM 32 bytes Clock frequency 4.19MHz Clock frequency generation X-TAL OSCILATION Package 20pin SSOP 4.2 RF block Carrer frequency 315.1MHz Frequency generation X-TAL Modulation Bit transmission rate 500bps or 1000bps Bandwidth 120KHz...
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5.Features 5.1 Transmission frame The transmission begins immediately in case of LOCK and UNLOCK button is pressed. but Panic buttonis begun after 0.5s The transmission frame consists of the synchronous frame and the data frame. The synchronous frame has 320bit synchronous codes that it will be used for the receiver to wake up. The data frame consists of 24bit length identification code, 16bit security code and 4bit function code and 8bit crc code.
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