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51單片機(jī)波特率計(jì)算公式

作者：時(shí)間：2016-11-17 來(lái)源：網(wǎng)絡(luò)

把定時(shí)器做波特率發(fā)生器，計(jì)算公式：

T1,T2計(jì)數(shù)器內(nèi)部一樣：

fosc/（32*12*（256-TH1））; SMOD=0; //11.0592,(9600,8,1)值為0xfd,根據(jù)晶振和初值以此類推

//24MHz (4800,8,1)值為0xf3

T2計(jì)算公式：

fosc/(32*(65536- (RCAP2H,RCAP2L)) ); SMOD=0//11.0592,(9600,8,1)值為0xFFDC,根據(jù)晶振和初值以此類推

備注：fosc：晶振頻率Hz

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關(guān)鍵詞： 51單片機(jī)波特率計(jì)算公