Omron Automotive Electronics Korea OKA-330T RF Keyless Entry System (Transmitter) User Manual

Omron Automotive Electronics Korea Co., Ltd. RF Keyless Entry System (Transmitter) Users Manual

Users Manual

OMRON AUTOMOTIVE ELECTRONICS KOREA OKA-330T Transmitter, RF Keyless Entry System
Table of contents 1. Constitution of the Radio Frequency Keyless Entry system Controller for vehicle ................................................................................................................. 1 2. User's manual (provisionally) ............................................................................... 2 3. Block diagram ........................................................................................................... 3 4. Specification ............................................................................................................... 4 5. Features ...................................................................................................................... 5 This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation.Caution: Any changes or modifications to the equipment not expressly approved by the party responsible for compliance could void user's authority to operate the equipment.
1. Constitution of the Radio Frequency Keyless EntrySystem for vehicleThe radio frequency keyless entry is a system that it controls locking and unlocking the door and thetrunk and the panic by wireless remote controller. This system consists of three components. The TRANSMITTER is adevice that transmits the signal when the button is pressed. The transmission signal consists of several synchronouscodes, unique identification code, security code and function code and crc code. The RECEIVER is fixed inside thevehicle. It works intermittently to prevent the battery exhaustion. When the receiver detects the synchronous code, itruns continuously to receive the signals completely. After receiving the signal, the receiver decides which operation willbe performed. The user can select the following operations by pressing the button of the remote transmitter.OPERATION ACTIONLOCK lock the doorUNLOCK unlock the doorTRUNK open the trunkPANIC alarm the hornTransmitterf = 313.85MHz-1-
2. User's manual (provisionally)REMOTE TRANSMITTERYou can lock and unlock your vehicle with the remote transmitter.LOCKWhen 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 theignition switch.UNLOCKWhen you push the UNLOCK button, all the doors will unlock.You cannot unlock any of the doors with the remote transmitter if any door is open or the key is in theignition switch.TRUNKWhen you push continuously the TRUNK button during 0.5s, TRUNK will open.PANICWhen you push continuously the PANIC button during 0.5s, horn will alarm.-2-
3. Block diagramThis is block diagram concerning to the transmitterfigure 3.1 block diagram of the transmitter-3-TRANSM ITIONRF CIRCUIT8 BITCPUEEPRO MLOCKUNL O C KTRUNPANIC4.19 M Hz9.807813M Hz
4. Specification4.1 CPUTypeROMRAMEEPROMClock frequencyClock frequency generationPackageuPD789860-xxx(8bit)Manufacturer : NEC Corporation4Kbytes128 bytes32 bytes4.19MHzX-TAL20pin SSOP4.2 RF blockCarrer frequencyFrequency generationModulationBit transmission rateBandwidthRF output power (field strength)313.85MHzX-TALFSK500bps or 1000bps10KHz4000 V/m at 3mμ4.3 OthersDimensionWeighBatteryOperation VoltageOperation Temperature62.0mm×33.7mm×14.3mm21.5gLithium cell (CR2032)Manufacturer : PANASONIC Battery corporation etc.DC3V-20 +60℃～ ℃-4-
5.Features5.1 Transmission frameThe transmission begins immediately in case of LOCK and UNLOCK, TRUNK and PANIC is begunafter 0.5s.The transmission frame consists of the synchronous frame and the data frame. The synchronous frame has320bit synchronous codes that it will be used for the receiver to wake up. The data frame consists of 24bitlength identification code, 16bit security code and 4bit function code and 8bit crc code. 16million differentidentification codes are available.The security code is always changed in case of any of the buttons is pressed. Thetransmissiontimeistypically300 milliseconds.5.2 Battery savingTo prevent the battery exhaustion , the micro-computer of the transmitter is usually inactive. When the buttonwill be pressed, the micro-computer wakes up immediately and judges which button is pressing. Then themicro-computer constructs the transmission frame and radiates it from the antenna .After transmitting, themicro-computer switches stand-by mode by itself.-5-

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