智能车单片机最小系统原理图

1、111212DDCCBBAATitleNumber RevisionSize A1Date:2009-7-26Sheet of File:E:.Sheet1.SchDocDrawn By:12Y1XTAL-16MC622pFC522pFR210MGND GNDEXTAL XTALEXTAL XTAL RESETRESET1INPUT 2GROUND3U3MC34064P-5123456P2Header 3X2VCC GNDGNDVCCBKGD BKGDR310K R451D11N4148VCCS1SW-PBGNDRESET 123P7Header 3VCCGND R73.3K123P9Head

2、er 3VCCGNDPE7BKGDMODEBMODEAPE7MODEA MODEB R O M C T LXFCVDDPLL VSSPLL C10.1uF C20.01uF C35nFC4500pFR14.7KXFCVDDPLLGNDMISO1/PWM0/KWP0/PP04MOSI1/PWM1/KWP1/PP13SCK1/PWM2/KWP2/PP22SS1/PWM3/KWP3/PP31X A D D R 14/P K 08X A D D R 15/P K 17X A D D R 16/P K 26X A D D R 18/P K 420I O C 0/P T 09I O C 1/P T 110

3、I O C 2/P T 211I O C 3/P T 312I O C 4/P T 415I O C 5/P T 516I O C 6/P T 617I O C 7/P T 718A D D R 0/D A T A 0/P B 024A D D R 1/D A T A 1/PB 125A D D R 2/D A T A 2/P B 226A D D R 3/D A T A 3/P B 327A D D R 4/D A T A 4/P B 428A D D R 5/D A T A 5/P B 529A D D R 6/D A T A 6/P B 630A D D R 7/D A T A 7/P

4、B 731XIRQ/PE056IRQ/PE155R/W/PE254LSTRB/TAGLO/PE353ECLK/PE439MODA/IPIPE0/PE538MODB/IPIPE1/PE637XCLKS/NOACC/PE736P A 0/A D D R 8/D A T A 857P A 1/A D D R 9/D A T A 958P A 2/A D D R 10/D A T A 1059P A 3/A D D R 11/D A T A 1160P A 4/A D D R 12/D A T A 1261P A 5/A D D R 13/D A T A 1362P A 6/A D D R 14/D

5、A T A 1463P A 7/A D D R 15/D A T A 1564P A D 0/A N 067P A D 1/A N 169P A D 2/A N 271P A D 3/A N 373P A D 4/A N 475P A D 5/A N 577P A D 6/A N 679P A D 7/A N 7/E T R I G 081PS0/RXD089PS1/TXD090PS2/RXD191PS3/TXD192PS4/MISO093PS5/MOSI094PS6/SCK095PS7/SS096XFC44X A D D R 17/P K 35VREGEN97RESET42EXTAL 46X

6、TAL 47VDD265VDD113VDDX107VDDA 83VDDR 41VSS114VSS266VSSR40VSSX 106VSSA 86TEST48PJ1/KWJ121PJ0/KWJ022MODC/TAGHI/BKGD23P A D 10/A N 1072P A D 11/A N 1174P A D 12/A N 1276P A D 13/A N 1378P A D 14/A N 1480P A D 15/A N 15/E T R I G 182P A D 8/A N 868P A D 9/A N 970PM6/BF_PERR/RXCAN488PM5/BF_PROK/TXCAN0/TX

7、CAN4/SCK0100PM4/BF_PSYN/RXCAN0/RXCAN4/MOSI0101PM3/TX_BF/TXCAN1/TXCAN0/SS0102PM7/BF_PSLM/TXCAN487PJ7/KWJ7/TXCAN4/SCL 98PJ6/KWJ6/RXCAN4/SDA99X A D D R 19/P K 519VDDPLL 43VSSPLL 45VRH84VRL 85PM2/RX_BF/RXCAN1/RXCAN0/MISO0103PM1/TXCAN0/TXB 104PM0/RXCAN0/RXB105E C S /R O M C T L /P K 7108PWM7/KWP7/PP7109P

8、WM6/KWP6/PP6110PWM5/KWP5/PP5111PWM4/KWP4/PP4112M I S O 1/K W H 0/P H 052M O S I 1/K W H 1/P H 151S C K 1/K W H 2/P H 250S S 1/K W H 3/P H 349K W H 4/P H 435K W H 5/P H 534K W H 6/P H 633K W H 7/P H 732U1MC9S12DG128CPVE VRH VDDA VDDX VDDR VDD2VDD1C70.01uF C80.1uF C910uFL1InductorGNDVDDR C100.1uF C110

9、.01uF C120.1uF C130.01uFGNDVDD2VDD1TXD0RXD0TXD0RXD0C141uFC1+1VDD 2C1-3C2+4C2-5VEE 6T2OUT7R2IN 8R2OUT 9T2IN10T1IN11R1OUT 12R1IN 13T1OUT14GND 15VCC16U2MAX232CSEGNDVCCGNDJ1D Connector 9COM_TX COM_RX GNDGNDC2547uF C260.1uFR211KD10LED-REDGNDGNDVCC PA7PA6PA5PA4PA3PA2PA1PA0PB7PB6PB5PB4PB3PB2PB1PB0GNDTXD1RX

10、D1A D 0A D 1A D 2A D 3A D 4A D 5A D 6A D 7A D 8A D 9A D 10A D 11A D 12A D 13A D 14A D 15P T 0P T 1P T 2P T 3P T 4P T 5P T 6P T 7PWM0PWM1PWM2PWM3PWM4PWM5PWM6PWM712P5Header 14X2PA0PA2PA4PA6AD0AD1AD2AD3AD4AD5AD6AD7PA1PA3PA5PA7VSS2AD8AD9AD10AD11AD12AD13AD14AD151228P3Header 14X2PWM3PWM1PK3PK1PT0PT2PT4PT6

11、PK5PJ1NetLabel64PB1PB3PWM2PWM0PK2PK0PT1PT3PT5PT7PK4PJ0PB0PB2PB41228P4Header 14X2PB5PB7PH6PH4PH3PH1PE3PE1PB6PH7PH5PE7PH2PH0PE2PE01228P6Header 14X2VRL PM7RXD0RXD1PS4PS6NetLabel59PJ6PM4PM2PM0PWM7PWM5VSSAPM6TXD0TXD1PS5PS7PJ7PM5PM3PM1VSSX ROMCTL PWM6PWM4VDD2GNDPM0PM1PM2PM3PM4PM5PM6PM7PS4PS5PS6PS7PJ6PJ7VS

12、SX VSSR VSS2VSS1VSSA VRL GNDGNDPH0PH1PH2PH3PH4PH5PH6PH7P K 0P K 1P K 2P K 3P K 4P K 5PJ0PJ1PE0PE1PE2PE3D9LED-GREENR111K VCCF1Fuse 1PB0PB1PB2PB3PB4PB5PB6PB7R121K R131K R141K R151K R161K R171KR181KD8LED-GREEND7LED-GREEND6LED-GREEND5LED-GREEND4LED-GREEND3LED-GREEND2LED-GREENR53.3KGNDR63.3KR93.3KR83.3kR

13、103.3KL4InductorC160.01uF C170.1uFC1810uFL2InductorGNDVDDA C220.01uF C230.1uF C2410uF L3InductorGNDVDDX C270.01uF C280.1uF C2910uFL5InductorGNDVRH C191uFC151uFC201uFC211uF123P13Header 3R2251R2351PIN_1PIN_2PIN_1PIN_2VCC VCC VCC VCC 123P14Header 3RAW RAW RAW RAW GNDGNDVCCR2保证起振负载电容c5Cc6滤波可在extal 脚加上一很

14、小的电阻分压当y1的震荡频率很高时候可以不加r2通常为1m43j44j锁相环电路丗滤波丆同时提供2.5V 左右的电压13j65j 滤波电路为内部提供滤波功能ABCA,B,CCD 各电路中串联一电阻很小的电感主要是提供电磁兼容丆去除高频噪声D内部电压调整器供电端A/D 转换供电端I/O 驱动模块供电端A/D 转换器参考电压供电端418310784Xc=-1/(WC为单片机提供稳定的丆安全的丆纯净的电源LED-RED 指示单片机的工作状态可以接一个稳压二极管调试用的LED-GREENC 用PB 口丆由于IO 口的输出低电平的时候吸收的电流大于输出高电平的时候的电流丆所以采用上拉电阻的方式看这文档的

15、IO 端口的介绍P12链接复位电路丗采用MC9S12DG128B 的专用复位芯片MC34064或者采用电容的方式在低压情况下产生一个复位信号丆也可在手动按键 SW 的触发下产生可靠的复位信号丆这对于 MCU 的稳定复位是非常有利的。由于复位按键动作时丆如果电路等效电感存在会在复位脚上产生负的感应电势所以我们给复位按键串接电阻以及在R2 反向并联一个二极管来保护 MCUP2为BDM 调试的接口一般应该采用清华大学的定义方式注意丆在三引脚上面接的电阻R23=R22=51欧丆这是考虑到充分保护MCU 的该引脚而设计的上拉电阻丆以便能给MCU 产生一个持续一段时间的低电平复位信号MCU 的BKGD 引脚和BDM 调试接口的BKGD 引脚相接丆但还应该在MCU 的BKGD 引脚与VCC 加接一个电阻MCU 的运行模式丠RXD0(串行接收 0,TXD0(串行发送 0分别接单片机的 PS0(89 引脚和 PS1(90 引脚只用了串行接口的 3 个引角丆其中 2 引脚为串行发送丆接 MAX232 的 14 引角丆3 引脚为串行接收丆接 MAX232 的 13 引