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N=X1+X2+????Xn
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Vin(t)=Vin
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Vout(t)=Vin+m(Vcc-Vin)(1-exp(-t/RC))-(N-m)Vin(1-exp(-t/RC)
m(Vcc-Vin)(1-exp(-t/RC))??????????
(N-m)Vin(1-exp(-t/RC)??·???????
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Vin=Vcc??m/N (1)
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????1?ù?????·?????????????ò????????????????????HT1621×÷?????§?????????÷??P1.0~P1.3????I/O??????HT1621???????á???±?????????????????????·????????????????12??????·?±???????·ü±í??

MSP430F1121??????4K FLASH ?????÷??????±????ò??????·?????×÷???????????÷?????ò???????????????á??·???FLASH?????÷????????????????·???????MSP430F1121 ????????16???¨?±?÷????????????I/O????????????UART??????·????????á??????????PC?ú???????????????????ù?????ò?×???????¨?÷??

?????????×??
1. MSP430X1XX Family User&#39s Guide 2000
2. TI Application reports/slaa104.pdf

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