50J1 Transmitter, RF Keyless Entry System 50J1NP
Table of contents 1. Constitution of the Radio Frequency Keyless Entry system with Door Lock Controller for vehicle ...................................................................................... 1 2. User’s manual (provisionally) .......................................................................... 2 3. Block diagram ................................................................................................ 3 4. Specification ......................................................
1. Constitution of the Radio Frequency Keyless Entry System with Door Lock Controller for vehicle The radio frequency keyless entry is a system that it controls locking and unlocking the door by wireless remote controller. This system consists of two 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, and security code and function code.
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 in the ignition switch. UNLOCK When you push the UNLOCK button once , only the driver’s door unlocks. The remaining door unlock when you push the button a second time.
3. Block diagram This is the block diagram concerning to the transmitter Antenna OUT PUT 315.1MHz 8BIT CPU LOCK Data UNLOCK PANIC PLL I C （Xt al × 32） Xt al EEPROM 9. 846875MHz CERAMI C RESONATOR 5. 00MHz Figure 3.
4. Specification 4.1 CPU Type ROM RAM EEPROM Clock frequency Clock frequency generation Package uPD789860 (8bit) Manufacturer: NEC Corporation 4K bytes 128 bytes 16 bytes 5MHz Ceramic resonator 20pin SOP 4.2 RF block Carrier frequency Frequency generation Modulation Bit transmission rate Bandwidth RF output power (field strength) 315.1MHz Crystal resonator FSK 1000bps or 2000bps 120KHz 10.8uW（6000μ V/m） at3m max 4.3 Others Dimension Weight Battery Operation Voltage Operation temperature 55.7mm× 33.
5. Features 5.1 Transmission frame The transmission begins immediately in case of LOCK or UNLOCK button is pressed. The transmission frame consists of the synchronous frame and the data frame. The synchronous frame has 81 synchronous codes that it will be used for the receiver to wake up. The data frame consists of 28-bit length identification code, 16-bit security code and function code. 1600 million different identification codes are available.
6. PCB 6.1 Circuit diagram Figure 6.1.
6.2 Parts layout Figure 6.2.
Figure 6.2.
6.3 Pattern layout Figure 6.3.
Figure 6.3.
6.4 Parts List APPEARANCE /SPECIFICATION No PARTS NAME MANUFACTURE QTY 1 PWB ＊ 1 FR4 t=0.8 2 CPU NEC 1 μ PD789860MC 20pin 3 4 IC1 CERAMIC RESONATOR INFINEON MURATA 1 1 MATERIAL/MODEL TDA5101GEG CSTCR5M00G53A-R0 REMARKS Double Sided Board CPU1 SSOP 16pin IC1 PLL IC 5.00MHz CST1 ±0.5% 5 X TAL RIVER 1 FCX-03 9.846875MHz 9.
APPEARANCE /SPECIFICATION No PARTS NAME MANUFACTURE QTY 21 Battery Terminal (+) Shoushin Seimitsu 1 C5210R-H t=0.15 22 Battery Terminal(-) Shoushin Seimitsu 1 C5210R-H t=0.
