DESIＧN ANＤ DEVELOPＭEＮT PLＡＴFＯRM BASED ＯN
STC89C５2 MICRＯCOＮＴROLLER ＥXＰERＩMＥNT
ABSTRＡCT
Ｔhｅ ＳTＣ8９C5２ is ａ loｗ ｐｏwｅr， ｈiｇh perfoｒmａncｅ
ＣＭOＳ8 produｃeｄ SＴC， with 8Ｋ in sysｔeｍ proｇraｍmａble Fｌash
mｅmｏry． STＣ89C５2 ｓing ｃlaｓｓic MCS—51 kｅrｎel， but made ａ lｏt
ｏf ｉmprovｅmｅnts makｅ the chｉp ｗｉth rａdｉｔioｎal 51 SCM featｕｒes
not avaiｌable. Iｎ ａ single chiｐ， ｗith ８ ＣPU ｄextｅrｏus anｄ
iｎ－sysｔｅm ｐｒogｒammａｂle Ｆlash， the STC８9Ｃ５2 offeｒs soｌutions
ｆor ｈigh flexｉbilitｙ, super efficient for many ｅｍbedded cｏntroｌ
aｐplｉｃatioｎs. Hａs the sｔaｎdaｒd ｆeatures: 8K bytes of Ｆlasｈ， 51２
bytes ｏｆ RAM, 32 I/O ｌｉnes， thｅ watcｈdog ｔｉｍｅｒ, builｔ－ｉn 4KB
EEPROM， ＭAX810rｅset ｃirｃｕit, 3 16 tｉmｅr ／ counｔer， 4 exteｒnal
inｔerrupts， ａ 7 ｖｅctoｒ lｅｖel ４ intｅrrupt stｒｕｃtｕｒｅ， a
tｏtal of. In additｉon STＣ89C52 ｃan be rｅduceｄ to ０Hz static logiｃ
oｐｅration， supｐort 2 sofｔｗare selectaｂle poｗer saviｎg mｏdｅ. The idｌe
ｍode, tｈe CＰU stops wｏrkｉng， RAM， tiｍｅｒ / cｏunｔｅr， serｉal ｐoｒt
intｅrrupｔ, continuｅ ｔo worｋ ｐermit.Thｅoｗeｒ—doｗn ｍode， the RＡＭ
content bｅing saｖed, has beｅｎ frozeｎ， ｄisabling alｌ oｔher chip
fｕnctions, ｕntｉｌ ｔｈe ｎext intｅrrupｔ or hardｗarｅ ｒeset。 Maｘiｍｕｍ
operａtiｎg requｅncｙ of ３５ＭHｚ， 6T/１2T oｐｔional。
SCM exｐerimｅnｔ platfｏｒm baｓｅd oｎ STC89Ｃ５2 MCＵ
ｄevelopmｅｎt of a soft， combineｄ with hardwarｅ， ｓoftware dｅsｉｇn in
Kｅｉl C environｍｅｎt, incｌudｉｎｇ watｅr lｉgｈts， digital tｕbe displaｙ and
LCD dispｌay modulｅ, the simulatioｎ sｕccｅｓsｆuｌｌy in Protues, downlｏad
tｏ ｔｈe circuit ｂoard ｔesｔ succeｓｓful. To achieve water lamp jumｐ
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