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1.51单片机规定用11.0592MHZ的晶振
2 .常用无源晶振封装图
http://www.go-gddq.com/html/2009-05/461126.htm
http://www.szhjd.com/jingzhen_110.html
3.调试
while(!MCGSC_OSCINIT); /* Wait until the initialization cycles
of the external oscillator are complete */ 程序在此处走不下去了，是R205没焊造成的
of the external oscillator are complete */ 程序在此处走不下去了，是R205没焊造成的