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【正文】 __________________________________________________________________________________________________________________________________________________________________________________________________附錄一:EPM1270T144C5實(shí)驗(yàn)板管腳分配表50M晶振:18,20腳;32M晶振:89,91腳發(fā)光二極管D2~D9:低電平點(diǎn)亮,高電平熄滅8位撥碼開關(guān):不撥時(shí)接高電平,撥動(dòng)接低電平按鍵K2~K9:不按時(shí)接高電平,按下接低電平D21D65KEY111KEY515K223K629D32D76KEY212KEY616K324K730D43D87KEY313KEY721K427K831D54D98KEY414KEY822K528K93234腳擴(kuò)展口:1,2,3,;31,32,33,34接地,其余腳引入CPLD174013481955256331GND283914452053266232GND394215502159276733GND4104116492258286634GND5381144175223612969  6371243185124603068  共陽極6位數(shù)碼管接口DIG1144DIG4141A129D132G137  DIG2143DIG5140B130E133DP138  DIG3142DIG6139C131F134    液晶顯示器接口RS127R/W125EN124DB0123DB1122DB2121DB3120DB4119DB5118DB6117DB7114  串行口接口TXD112RXD113        單片機(jī)接口699388104ALE77  709487105PSEN78  719586106RST103  729685107    739784108    749881109    7510180110    7610279111    附錄二: CPL
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