Omron Automotive Electronics Korea OKA-220R RF Keyless Entry System User Manual MANUAL AND BLOCK DIAGRAM

Omron Automotive Electronics Korea Co., Ltd. RF Keyless Entry System MANUAL AND BLOCK DIAGRAM

MANUAL AND BLOCK DIAGRAM

RECEIVER, RF Keyless Entry System
OMRON
AUTOMOTIVE
ELECTRONICS
KOREA
OKA - 220R
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
6. Derivatives ---------------------------------------------------------------------------------------------- 5
- 1 -
1. Constitution of the Radio Frequency Keyless Entry System for vehicle
The radio frequency keyless entry is a system that it controllers locking and unlocking the door and open 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. It works intermittently to prevent the battery exhaustion. When the
receiver detects the sychronous code, it runs continuously to receive the signals completely. After receiveing the signal, the
receiver decides which operation will be performed. The user can select the following operations by pressing the button of the
remote transmitter.
OPERATION ACTION
LOCK lock the door
UNLOCK unlock the door
TRUNK open the trunk
- 2 -
2. User's manual (provisionally)
REMOTE TRANSMITTER
You can lock and unlock and open the trunk 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.
TRUNK
When you push the TRUNK button, Door of trunk will open.
- 3 -
3. Block diagram
This is the block diagram concerning to the receiver.
figure 3.1 block diagram of the transmitter
- 4 -
4. Specification
4.1 CPU
4.2 EEPROM
4.3 RF Receiver Module
4.4 Others
Type
ROM
RAM
Clock frequency
Clock frequency generation
Package
MB89637(8bit)
Manufacturer : Fujitsu
32K x 8bit
1K x 8bit
10MHz
Crystal resonator
64pin QFP
Type
Memory
Package
S-29131
Manufacturer: Seiko. Elec
1Kbit
8pin SOP
Type
Local clock frequency
Frequency generation
Modulation Scheme
Bandwidth
WMF-R13
Manufacturer: Mitsumi Elec.
307.9MHz
Crystal resonator
FM (Single Superheterodyne)
±200KHz
Dimension
Weigh
Battery
Operation Voltage,Current
Operation Temperature
113mm x 99.4mm x 30mm
172.5g
Car Battery(DC 12V)
DC12V,50mA(4mA on standby)
-30+80
- 5 -
5.Features
5.1 Door lock control
The LOCK relay in the receiver drives the door lock actuators to "LOCK"-side when LOCK button of transmitter was pressed.
The UNLOCK relay in the receiver drives the door lock actuators to "UNLOCK"-side when UNLOCK button of transmitter
was pressed. These facility doesn't work if the key is inserted the key clinder or the door is open.
5.2 Battery saving
Because of the power source of the receiver is car Battery, it is very important problem to minimize a power consumption. The
receiver's CPU works intermittently to prevent the battery exhaustion.
6.Derivatives
OKA-200R is an integrated controller for a car body control, includes the keyless entry receiver. The integrated controller consists of
the multiple control functions as follows, centralised door lock,turn-signal lamp, room-lamp, intermitted wiper, power window timer,
ignition key illumination, autolight, warning buzzer and so on.
INFORMATION TO THE USER
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to
part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the instructions, may cause harmful interference to
radio communications. However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to correct the interference by
one more of the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which
the receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.
WARNING
Changes or modifications not expressly approved by the manufacturer could void the user’s authority to operate the
equipment.

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