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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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HT67F488 датащи(PDF) 83 Page - Holtek Semiconductor Inc |
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HT67F488 датащи(HTML) 83 Page - Holtek Semiconductor Inc |
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83 / 171 page  Rev. 1.60 83 �ove��e� ��� �016 HT67F488/HT67F489 TinyPowerTM A/D Flash MCU with LCD & EEPROM Bit2~0 TnRP2~TnRP0:TMnCCRP3-bitregister,comparedwiththeTMnCounterbit9~bit 7ComparatorPMatchPeriod 000:1024TMnclocks 001:128TMnclocks 010:256TMnclocks 011:384TMnclocks 100:512TMnclocks 101:640TMnclocks 110:768TMnclocks 111:896TMnclocks ThesethreebitsareusedtosetupthevalueontheinternalCCRP3-bitregister,which arethencomparedwiththeinternalcounter’shighestthreebits.Theresultofthis comparisoncanbeselectedtocleartheinternalcounteriftheTnCCLRbitissetto zero.SettingtheTnCCLRbittozeroensuresthatacomparematchwiththeCCRP valueswillresettheinternalcounter.AstheCCRPbitsareonlycomparedwiththe highestthreecounterbits,thecomparevaluesexistin128clockcyclemultiples. Clearingallthreebitstozeroisineffectallowingthecountertooverflowatits maximumvalue. TMnC1 Register Bit 7 6 5 4 3 2 1 0 �a�e TnM1 TnM0 TnIO1 TnIO0 TnOC TnPOL TnDPX TnCCLR R/W R/W R/W R/W R/W R/W R/W R/W R/W POR 0 0 0 0 0 0 0 0 Bit7~6 TnM1, TnM0:SelectTMnOperatingMode 00:CompareMatchOutputMode 01:Undefined 10:PWMOutputMode 11:Timer/CounterMode ThesebitssetuptherequiredoperatingmodefortheTM.Toensurereliableoperation theTMshouldbeswitchedoffbeforeanychangesaremadetotheTnM1andTnM0 bits.IntheTimer/CounterMode,theTMoutputpincontrolmustbedisabled. Bit5~4 TnIO1, TnIO0:SelectTPnoutputfunction CompareMatchOutputMode 00:Nochange 01:Outputlow 10:Outputhigh 11:Toggleoutput PWMOutputMode 00:PWMOutputinactivestate 01:PWMOutputactivestate 10:PWMoutput 11:Undefined Timer/CounterMode Unused ThesetwobitsareusedtodeterminehowtheTMoutputpinchangesstatewhena certainconditionisreached.Thefunctionthatthesebitsselectdependsuponinwhich modetheTMisrunning. |
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