???????????·?????????
1??????·MCS-51??????????????????????????????淴????????????????о?????XTAL1????????XTAL2??????о???????XTAL1??XTAL2??????????????????????????????????????????????
2????????λ
1. ???????
???????????????????? (??P???)???????????????????(??S???)??????????????1(P1)?????2(P2)??
2. ????????
CS-51???????????????й?????????????涨????????????????6???????????α???S1??S6??????????????????????????????????????????12????????????S1Pl??S1P2??????S6P2????????????????????12??????????????????????????????????????????????????????????12MHz???????????????1??s??????????????6MHz???????????????2??s??
3. ???????
???????????????????λ?????????????????????????????????????????MCS-51????????????????????????????????????????
3??MCS-51??????
????????MCS-51???????????????????䴙?????????????????????Щ????????????????????????
4?? MCS-51?????????????
1????λ???
??1?? ???????????????????λ
??λ????????????????????λ??PC??????0000H??????????0000H????????г???
??2????λ???
RST???????λ????????????λ??????????Ч????????????24????????????(??????????????)????????????????λ????????????????6MHz????λ????????????С??4??s??
??3????λ???
??λ???????????λ??????????λ??????????λ??·?е???衢????????????????RST?????????2????????????????????????λ???趨???
2????????з??
??????о???????????????????????У???????????????????????????????????????????????????????????????????????????μ?????????䶮
????admin ?????????2018-05-08
