stc89c52单片机开发板电路原理图.pdf

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1、54321模拟量采集ADCAD/DA转换VCCVCCEEPROM24c02VCCVCCP0口做普通IO，要上拉AD按键VCCC510uFVCC4位七段数码管显示SW21WP=LWriteR110KP00C60.1uFAIN0U6WP=HWriteProtectR310KP01C2R26R25R410KP02型号：2N3904AIN0116D3LEDI2CADDRESS"A0"3封装：SOT23AIN12AIN0VDD15R342K10uF4.7K4.7KR510KP03CS1S2SWSPSTR38AIN1AOUTU4R710KP04AIN2314R37100

2、_1%AIN34AIN2VREF13VCC18R810KP05R11R1210KAIN3AGND2A0VCC7R910KP06BESW22512A1WP12实物参考A0EXT36SCLP14R1010KP076A1OSC114A2SCL5SDAP15100100710SCLGNDSDA8A2SCL9SDAGNDSDAAT24C02SWSPSTDR40封装：SO8NB33D100_1%PCF8591宽体，封装：SO16WBS1P00P05S2S3P01Q1CQ2CP13R142K1P12R152K12N3904SW232N3904VCCVCCVCCBBEEU1

3、12111098722热敏电阻光敏电阻可调电阻afbSWSPST12螺丝固定孔s1s2s3R46a100_1%12RT1RRG1H1H2fbSEG7-4SW24NTC10KGL55281hole1holegc21J911ecS3S4AIN1AIN2dpH3H4deddpcgs4R16R1811hole1holeSWSPSTAIN3211123456R48R35R363100_1%10010010K_1%10K_1%P04P03P07P02P06S4CON333扩展口Q3CQ4CP11R192K1P10R202K12N39042N3904J2J3J4J5BB1

4、P001P101P201P30S1S2S3S42E2E2P012P112P212P313P023P123P223P324P034P134P234P33J6VCCLED指示灯5P045P145P245P34共阴极数码管，位选端为低时点亮对应数码管D1LED6P056P156P256P351VCCR242KP167P067P167P267P362位选端增加三极管，是提高驱动能力485传输8P078P178P278P37D2LEDCON2R39R272KP17CON8CON8CON8CON8封装：SIP-8P4.7K2.54mm间距3.5mm间距端子VCCU7J1

5、0P3018ROVCCP3627R411REBC361202MCU单片机CP314DEA5中断按键按键上并联电阻，VCCDIGNDC1810uF为了消抖U5MAX485CON2矩阵键盘VCCP23P22P21P20SW1SWSPST封装：SO8NBR47R22KP32P10140VCCP1.0VCCVCC4.7KP11239P00SW10P1.1P0.0/AD0SW2SWSPSTC3P123P1.2P0.1/AD138P01C4SW4SWSPSTSW5SWSPSTSW6SWSPSTSW7SWSPSTR62KP33P13437P02VCCP1.3P0.2/AD

6、210uFP14536P0310uFP1.4P0.3/AD3P27R282KSWSPSTP15635P04VCCP167P1.5P0.4/AD434P05计数按键P178P1.6P0.5/AD533P06SW8SWSPSTSW9SWSPSTSW12SWSPSTSW11SWSPSTSW3SWSPSTP1.7P0.6/AD6R132KP34RST932P07VCCRSTP0.7/AD7P301031R3010KP3.0/RXDEAVCCP26R292KP311130R31P3212P3.1/TXDALE29P3.2/INT0PSEN10KP3313P3.3/IN

7、T1P2.7/A1528P27SW13SWSPSTSW14SWSPSTSW15SWSPSTSW16SWSPSTP341427P26P3.4/T0P2.6/A14P351526P25P3.5/T1P2.5/A13P25R322K点阵模块接口P361625P24超声波模块P3717P3.6/WRP2.4/A1224P23P3.7/RDP2.3/A11J1418X2P2.2/A1023P22SW17SWSPSTSW18SWSPSTSW19SWSPSTSW20SWSPST1922P211P34X1P2.1/A9J1Y111.0592MHz2021P202VCCGND

8、P2.0/A81VCC3P33P24R332K2P3