OMRON AUTOMOTIVE ELECTRONICS KOREA OKA-100T 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. ...
1. Constitution of the Radio Frequency Keyless Entry System for vehicle The radio frequency keyless entry is a system that it controlls 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. The transmission signal consists of several synchronous codes, unique identification code, security code and function code. The RECEIVER is fixed inside the vehicle.
2. User's manual (provisionally) REMOTE TRANSMITTER 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. UNLOCK When 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 the ignition switch.
3. Block diagram This is block diagram concerning to the transmitter figure 3.
4. Specification 4.1 CPU Type uPD7554AG-540(4bit) Manufacturer : NEC Corporation ROM 4096 x 8bit(4kbytes) RAM 128 x 4bit EEPROM 16 x 8bit Clock frequency 500KHz Clock frequency generation CR ossillation Package 20pin DIP 4.2 RF block Carrer frequency 307.9MHz Frequency generation SAW resonator Modulation FSK Bit transmission rate 100bps or 500bps Dimension 55.5mm x 37.5mm x 14mm Weigh 22.5g Battery Lithium cell (CR2032) Manufacturer : PANASONIC Battery corporation etc.
5.Features 5.1 Transmission frame The transmission begins immediately in case of LOCK or UNLOCK or button is pressed. The transmisssion frame consists of the synchronous frame and the data frame. The synchronous frame has 30 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 function code. 16million different identification codes are available.
