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C6748 主频456M 一条 "i++ " 运算需要多少时间?

Stefan Wang
Prodigy 150 points


有一个延时函数

void Delay(volatile unsigned int count)

 {

     while(count--);

 } 

假如count=0x00FFFFFF   延时时间不是16777215/456M=0.037s吗？  实际上测试超过1s多？why？