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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) 82 Page - Holtek Semiconductor Inc |
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HT67F488 датащи(HTML) 82 Page - Holtek Semiconductor Inc |
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82 / 171 page  Rev. 1.60 8� �ove��e� ��� �016 HT67F488/HT67F489 TinyPowerTM A/D Flash MCU with LCD & EEPROM Compact Type TM Register Description OveralloperationoftheCompactTMiscontrolledusingsixregisters.Areadonlyregisterpair existstostoretheinternalcounter10-bitvalue,whilearead/writeregisterpairexiststostorethe internal10-bitCCRAvalue.Theremainingtworegistersarecontrolregisterswhichsetupthe differentoperatingandcontrolmodesaswellasthethreeCCRPbits. Register Name Bit 7 6 5 4 3 2 1 0 TMnC0 TnPAU TnCK� TnCK1 TnCK0 TnO� TnRP� TnRP1 TnRP0 TMnC1 TnM1 TnM0 TnIO1 TnIO0 TnOC TnPOL TnDPX TnCCLR TMnDL D7 D6 D5 D4 D3 D� D1 D0 TMnDH — — — — — — D9 D8 TMnAL D7 D6 D5 D4 D3 D� D1 D0 TMnAH — — — — — — D9 D8 Compact TM Register List (n=1~3) TMnC0 Register Bit 7 6 5 4 3 2 1 0 �a�e TnPAU TnCK� TnCK1 TnCK0 TnO� TnRP� TnRP1 TnRP0 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 TnPAU:TMnCounterPauseControl 0:Run 1:Pause Thecountercanbepausedbysettingthisbithigh.Clearingthebittozerorestores normalcounteroperation.WheninaPauseconditiontheTMwillremainpoweredup andcontinuetoconsumepower.Thecounterwillretainitsresidualvaluewhenthisbit changesfromlowtohighandresumecountingfromthisvaluewhenthebitchanges toalowvalueagain. Bit6~4 TnCK2~TnCK0:SelectTMnCounterclock 000:fSYS/4 001:fH 010:fH/16 011:fH/64 100:fTBC 101:fTBC 110:TCKnrisingedgeclock 111:TCKnfallingedgeclock ThesethreebitsareusedtoselecttheclocksourcefortheTM.Theexternalpinclock sourcecanbechosentobeactiveontherisingorfallingedge.TheclocksourcefSYSis thesystemclock,whilefHandfTBCareotherinternalclocks,thedetailsofwhichcan befoundintheoscillatorsection. Bit3 TnON:TMnCounterOn/OffControl 0:Off 1:On Thisbitcontrolstheoverallon/offfunctionoftheTM.Settingthebithighenablesthe countertorun,clearingthebitdisablestheTM.Clearingthisbittozerowillstopthe counterfromcountingandturnofftheTMwhichwillreduceitspowerconsumption. Whenthebitchangesstatefromlowtohightheinternalcountervaluewillbereset tozero,howeverwhenthebitchangesfromhightolow,theinternalcounterwill retainitsresidualvalue.IftheTMisintheCompareMatchOutputModethentheTM outputpinwillberesettoitsinitialcondition,asspecifiedbytheTnOCbit,whenthe TnONbitchangesfromlowtohigh. |
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