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遙控無鑰匙進入(RKE)

遙控無鑰匙進入(RKE)系統旨在遠程鎖定和解鎖車門。當駕駛員按下鑰匙扣上的按鈕時,其中的發射器發射調製的RF信號。車載接收機解調RF信號並將解調數據提供給微控制器。

RKE 系統方塊圖

This is the block diagram of an RKE system.

建議產品

RF-Devices
Part Number Functions Availability Frequency(Hz) FSK ASK Package Operating Voltage
TX RX Local RF IF
TC32306FTG VCO
+PLL
315 M to 915 M 230 k/280 k
(built in)
QFN36 2.0 to 5.5 V

Note: This transceiver IC can also be used as a receive-only IC.

車用微控制器
Part Number ROM RAM Remarks Package Operating Voltage
TMP89FM82TDUG 32 KB 2 KB
  • TLCS-870/C1 core 8-Bit
  • Clock gearing: 1/4, 1/2, 1/1
  • Programmable Motor Driver (PMD2): 1 ch
LQFP 48 4.5 to 5.5 V
(@8MHz)
TMPM358FDTFG 512 KB 80 KB
  • Arm® Cortex®-M3 CPU core 32-Bit
  • Maximum operating frequency: 40 MHz
  • SLEEP Mode
  • Include 16 KB RAM for backup
LQFP100 4.5 to 5.5 V
System Power Supply ICs
Part Number Functions Output Voltage Output Current Package Operating Voltage
TB9005FNG CPU voltage regulator
(with WDT)
5 V 8 mA SSOP20 6 to 18 V
TB9021FNG CPU voltage regulator
(with WDT)
5 V 200 mA TSSOP16 6 to 18 V
TB9042FTG**

CPU voltage regulator
DC/DC + LDO
(with WDT, SPI)

1.5/1.2 V
5 V
5 V
5/3.3 V(Backup)
1000 mA
400 mA
100 mA
10 mA
HQFN52 7 to 20 V
TB9044AFNG** CPU voltage regulator
DC/DC + LDO
(with WDT, SPI)
5V
5V
5V
5 V
400 mA
100 mA
100 mA
100 mA
HTSSOP48 2.7 to 18 V

**: Under development

* Arm and Cortex are registered trademarks of Arm Limited (or its subsidiaries) in the US and/or elsewhere.

* System and product names mentioned herein may be trademarks or registered trademarks of respective companies or organizations.

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