NIDEC MOBILITY G8C-501M Keyless Entry System User Manual 1

OMRON Automotive Electronics Co. Ltd. Keyless Entry System 1

User Manual

APPROVED CHECKED DESIGNED G８C-501M Receiver, RF Keyless Entry System 戸谷 彰信
Table of contents 1. Constitution of the Radio Frequency Keyless Entry system for vehicle ............. 1 2. User’s manual (provisionally) .......................................................................... 2 3. Block diagram ................................................................................................ 3 4. Specification ................................................................................................... 4 5. Features .......................................................................................................... 5 6. Supplement ................................................................................................... 7. PCB 7.1 Circuit diagram ........................................................................................... 6 7.2 Parts layout ................................................................................................. 8 7.3 Printed circuit pattern ................................................................................. 10 7.4 Parts list ..................................................................................................... 12 7.5 Connector ................................................................................................... 14 8. HIC 8.1 Circuit diagram ........................................................................................... 15 8.2 Parts layout ................................................................................................. 16 8.3 Printed circuit pattern ................................................................................. 18 8.4 Parts list ...................................................................................................... 22 9. RF MODULE 9.1 Circuit diagram ........................................................................................... 25 9.2 Parts layout ................................................................................................. 26 9.3 Parts list ...................................................................................................... 28 10. Photographs .................................................................................................... 30
1. Constitution of the Radio Frequency Keyless Entry System for Vehicle The radio frequency keyless entry system controls door lock/unlock by wireless remote control. This system consists of 2 components：the TRANSMITTER and the RECEIVER. The TRANSMITTER, when activated by pressing the appropriate button, sends a signal that consists of several synchronous codes, unique identification code and security code and function code. The second component is the RECEIVER, which is installed in the vehicle. It works intermittently to reduce the battery exhaustion of the car. It runs continuously to receive signals completely when it detects the synchronous code. The user can select the following functions by pressing one of two buttons on the TRANSMITTER. BUTTON FUNCTION LOCK Lock the door UNLOCK Unlock the door PANIC Starts sounding the horn and flashing the headlight intermittently Transmitter f =313.8∼313.9MHz
2. User’s manual (provisional) 3BUTTON TRANSMITTER (OMRON TYPE:G8D-525M-A6-C) 2BUTTON TRANSMITTER (OMRON TYPE:G8D-525M-A9-C) You can control door lock/unlock and panic alarm with the TRANSMITTER. LOCK When you press the LOCK button, all the doors will lock. You cannot lock the doors with the TRANSMITTER if the key is in the key cylinder. UNLOCK When you press the UNLOCK button, to begin with, the driver’s door will unlock. Secondly, if you press it once more continuing the state that driver’s door is UNLOCK, all the doors will unlock. You cannot unlock the doors with the TRANSMITTER if key is in the key cylinder. If the doors are not opened within 30 seconds after you unlock the door with the TRANSMITTER, all the doors will be automatically relocked. PANIC ALARM When you press the PANIC button, the vehicle starts sounding the horn and flashing the head light intermittently. These functions continue for 175 seconds unless any of the buttons on the TRANSMITTER are pressed. △ CAUTION The remote control switch (TRANSMITTER) is a precision electronic device. Therefore please pay attention to the following: Do not impose shock to the TRANSMITTER. Keep the TRANSMITTER dry. Do not disassemble the TRANSMITTER. When the TRANSMITTER is opened, avoid getting water and dust, etc inside it. In addition, do not touch the precision electronic parts.
3. Block diagram ANT ※ 16BIT CPURECEIVE CIRCUIT POWER SOURCE(5V) data DOORLOCKACTUATOR Signal of vehicle status input 12V (car battery) data data FRONT ECU CLOCK O.S.C8.00MHz 313.8∼313.9MHz EEPROM outputDRIVE CIRCUIT figure 3.1 Block diagram of the receiver ANT BP FILTER RF -AMP MIX IF FILTER LOW- Freq AMP ＡＭＰ COMPARATOR CPU O.S.C figure 3.2 Block diagram ※RECEIVE CIRCUIT
4. Specification 4.1 CPU Type MB90F548GLSPFV-GS Manufacturer: FUJITSU ROM 128Kbyte RAM 4Kbyte Clock frequency 8.00MHz Clock frequency generation Crystal resonator Package 100pin LQFP 4.2 EEPROM Type S93C56AMFN Manufacturer: Seiko instruments. Memory 2Kbit Package 8pin MSOP 4.3 RF Receiver Module Type G8X-21RX-R Manufacturer: IAM Local clock frequency 10.14MHz Frequency generation Crystal resonator Modulation Scheme FM Carrier Detect Sensitivity 3 dBuVemf 4.4 Others Dimension 187.3mm×80.6mm×39.5mm Weight 260g Battery Car Battery (DC 12V) Operation Voltage , Current DC 12V, 120mA Operation temperature -30℃ ~ +75℃
5. Features 5.1 Door lock control The RECEIVER sends “LOCK” signal to the door-lock actuators when LOCK button on the TRANSMITTER is pressed. The RECEIVER also sends “UNLOCK” signal to the door-lock actuators when UNLOCK button on the TRANSMITTER is pressed. These functions don’t work if the key is in the key cylinder. 5.2 Automatic locking The RECEIVER sends “LOCK” signal to the door-lock actuators if any of the doors are not opened within 30 seconds after UNLOCK button on the TRANSMITTER is pressed. This function prevents the key from continuing the state of UNLOCK when the UNLOCK button is pressed by accident, such as the key is in user’s pockets. 5.3Theft alarm(panic alarm) The RECEIVER sends signal to the horn circuit and Front ECU when PANIC button on the TRANSMITTER. Afterward the vehicle starts sounding the horn and flashing the headlight intermittently. These functions continue for 175 seconds unless any of the buttons on the TRANSMITTER are pressed. 5.4 Battery saving Because the power source of the receiver is the car battery, it is very important to minimize power consumption. The RECEIVER (CPU: within RECEIVER) works intermittently to reduce the battery exhaustion. 6. SUPPLEMENT G8C-501M is an integrated controller for function of the car, such as door lock (includes the keyless entry ) , theft alarm, turn signal-light, interior light, power window timer, ignition key illumination, warning buzzer, etc. This controller has many input and output signals, some of them are concerned with the keyless entry system. This document refers only to keyless entry system (not refers to other functions.)

Navigation menu