 |
поискавой системы для электроныых деталей |
|
|
поискавой системы для электроныых деталей |
|
HT45F4M датащи(PDF) 70 Page - Holtek Semiconductor Inc |
|
|
|||||||||||||||||||||||||||||
HT45F4M датащи(HTML) 70 Page - Holtek Semiconductor Inc |
|
|
70 / 138 page  Rev. 1.10 70 �an�a�� 1�� �01� Rev. 1.10 71 �an�a�� 1�� �01� HT45F4M Lithium Battery Backup Power ASSP MCU HT45F4M Lithium Battery Backup Power ASSP MCU HoweveracomparematchfromComparatorAwillalsoautomaticallycleartheT0ONbitandthus generatetheSinglePulseoutputtrailingedge.InthiswaytheCCRAvaluecanbeusedtocontrol thepulsewidth.AcomparematchfromComparatorAwillalsogenerateaTMinterrupt.Thecounter canonlyberesetbacktozerowhentheT0ONbitchangesfromlowtohighwhenthecounter restarts.IntheSinglePulseModeCCRPisnotused.TheT0CCLRandT0DPXbitsarenotusedin thisMode. Capture Input Mode ToselectthismodebitsT0M1andT0M0intheTM0C1registershouldbesetto01respectively. Thismodeenablesexternalsignalstocaptureandstorethepresentvalueoftheinternalcounter andcanthereforebeusedforapplicationssuchaspulsewidthmeasurements.Theexternalsignalis suppliedontheTP0_0orTP0_1pin,whoseactiveedgecanbeeitherarisingedge,afallingedgeor bothrisingandfallingedges;theactiveedgetransitiontypeisselectedusingtheT0IO1andT0IO0 bitsintheTM0C1register.ThecounterisstartedwhentheT0ONbitchangesfromlowtohigh whichisinitiatedusingtheapplicationprogram. WhentherequirededgetransitionappearsontheTP0_0orTP0_1pinthepresentvalueinthe counterwillbelatchedintotheCCRAregistersandaTMinterruptgenerated.Irrespectiveofwhat eventsoccurontheTP0_0orTP0_1pinthecounterwillcontinuetofreerununtiltheTnONbit changesfromhightolow.WhenaCCRPcomparematchoccursthecounterwillresetbacktozero; inthiswaytheCCRPvaluecanbeusedtocontrolthemaximumcountervalue.WhenaCCRP comparematchoccursfromComparatorP,aTMinterruptwillalsobegenerated.Countingthe numberofoverflowinterruptsignalsfromtheCCRPcanbeausefulmethodinmeasuringlong pulsewidths.TheTnIO1andTnIO0bitscanselecttheactivetriggeredgeontheTP0_0orTP0_1 pintobearisingedge,fallingedgeorbothedgetypes.IftheTnIO1andTnIO0bitsarebothset high,thennocaptureoperationwilltakeplaceirrespectiveofwhathappensontheTP0_0orTP0_1 pin,howeveritmustbenotedthatthecounterwillcontinuetorun. AstheTP0_0orTP0_1pinispinsharedwithotherfunctions,caremustbetakeniftheTMisinthe InputCaptureMode.Thisisbecauseifthepinissetupasanoutput,thenanytransitionsonthispin maycauseaninputcaptureoperationtobeexecuted.TheT0CCLRandT0DPXbitsarenotusedin thisMode. |
|
ссылки URL |
| Вашему бизинису помогли Аллдатащит? [ DONATE ] |
Что такое Аллдатащит | реклама | контакт | Конфиденциальность | Ссылка на техническое описание | обмен ссыками | поиск по производителю All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
Russian ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
