一个基于12M和6M晶振的延时函数
一个基于12M和6M晶振的延时函数,包括1us,2us,5us10us,20us,50us100us,200us,500u1ms,2ms,5ms10ms,20ms,50ms 0.1s,0.2s,0
2013-12-24
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