51单片机寄存器详解.doc

?¨ê±?÷/??êy?÷μ?·?ê???′??÷TMOD TMODê?ò???8??μ?ì?êa1|?ü??′??÷￡???ó|μ?μ??·ê?89H￡?2??é???°?·?￡ TMOD￡o1¤×÷·?ê???????′??÷ ??′??÷μ??·89H￡?2??é???°?·?￡ ??Dò B7 B6 B5 B4 B3 B2 B1 B0 ??·?o? GATE C/T M1 M0 GATE C/T M1 M0 GATE?a?a?????? μ±￡?0ê±￡?ò???DDTR0￡¨?òTR1￡????ˉ?ò???1?¨ê±?÷?￠??êy?÷ μ±￡?1ê±￡?ò?TR0*/INT0￡¨?òTR1*/INT1￡????ˉ?ò???1?¨ê±?÷?￠??êy?÷ GATE￡?0 ò?TR0￡¨TR1￡????ˉ?¨ê±?÷ GATE￡?1 ò?INT0￡¨INT1￡????ˉ?¨ê±?÷ C/T￡?0 ?¨ê±/??êy1¤×÷·?ê??????? M1M0?a?a1¤×÷·?ê??????? T2MOD￡o1¤×÷·?ê???????′??÷ ??′??÷μ??·0C9H￡?2??é???°?· ￡- ￡- ￡- ￡- ￡- ￡- T2OE DCEN T2OE￡o?¨ê±?÷2ê?3??êDí??￡?μ±￡?1ê±￡?P1.0/T2òy??ê?3?á?D???3?D?o? DCEN￡oμ±￡?1ê±￡?T2????3é?òé??ò????êy?÷ A ?÷òaíê3éèy??1|?ü￡o è·T0??êyò?3?±ê???? μ±??êy?÷??êyò?3?ê±￡????????°1?±?￡ê1ó?2é?ˉ·?ê?ê±￡?′???×÷?a×′ì???1?cpu 2é?ˉ￡?μ?ó|×￠òa?ú2é?ˉ????óDD§oóó|ò?èí?t·?·¨?°ê±?????????°0?±?￡ê1ó??D?? ·?ê?ê±￡?′???×÷?a?D??éê??±ê????￡???è??D?¨?????¨ê±?÷?1ê???êy?÷￡? ????o???1¤×÷·?ê?￡? ê?·??èó?ía?D???????¨ê±?÷oí??êy?÷μ???í￡￡? B TMODμ?μí4??ê?????T0μ?×???￡¨T0--P3.4 ?¨ê±?÷/??êy?÷0ía2?ê??t??3?ê?è???￡? TMODμ???4??ê?????T1μ?×???￡¨T1--P3.5?¨ê±?÷/??êy?÷1ía2?ê??t??3?ê?è???￡? C ????×?μ???ê?oío?ò? a?￠ GATE(TMOD.7) ·??aá????é??￡oGATE=0￡??¨ê±?÷μ???í￡oíINT1?T1?￡???è???óúTR0; GATE=1￡??¨ê±?÷μ???í￡2???òaóéTR0à′????￡????òòaINT1òy??μ?????￡???óD?t?? ???a??μ???ê±?¨ê±?÷ 2??aê?1¤×÷￡? b?￠ C/T(TMOD.6) ·??aá????é??￡oC/T=0￡?ó?×÷?¨ê±?÷￡? C/T=1￡?ó?×÷??êy?÷￡? d?￠ M1(TMOD.5),M0(TMOD.4) ó?M1,M0à′?????¨ê±?÷/??êy?÷μ?4??1¤×÷·?ê?: *·?ê?0￡oM1=0,M0=0.13???¨ê±/??êy·?ê? *·?ê?1￡oM1=0,M0=1.16???¨ê±/??êy?÷ *·?ê?2￡?M1=1,M0=0.8??3??μ×??ˉ??D?×°è?μ?8???¨ê±/??êy?÷ *·?ê?3￡?M1=1,M0=1.??êêó?óúT0￡?·??aá???8????êy?÷￡?T1í￡?1??êy ?¨ê±?÷/??êy?÷??????′??÷TCON TCONê?ò???8??μ?ì?êa1|?ü??′??÷￡???ó|μ?μ??·?a88H￡??é?a?°?·?￡ A ????×?μ???ê?oío?ò? a?￠TF1(TCON.7),TF0(TCON.5)----T1?￠??·t??3ìDòoóóéó2?t×??ˉ??0. b?￠TR1(TCON.6),TR0(TCON.4)----??êy??DD?????? TR1(TR0)=1,???ˉ?¨ê±/??êy?÷1¤×÷μ?±?òaì??t￡??1ó?GATE??μ?×′ì?óD1??￡ TR1(TR0)=0,í￡?1?¨ê±/??êy?÷1¤×÷?￡ ?????éóéèí?t??1?ò??0. c?￠ IE1(TCON.3),IE0(TCON.1)----ía2??D??INT1(P3.3)?