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HT45FH4J Datasheet(PDF) 85 Page - Holtek Semiconductor Inc |
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HT45FH4J Datasheet(HTML) 85 Page - Holtek Semiconductor Inc |
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85 / 129 page  Rev. 1.10 8� De�e��e� 1�� �01� Rev. 1.10 85 De�e��e� 1�� �01� HT45FH4J Emergency Light Flash MCU HT45FH4J Emergency Light Flash MCU Complementary PWM output ThedeviceprovidesacomplementaryoutputpairofsignalswhichcanbeusedasaPWMdriver signal.ThesignalissourcedfromtheTM0outputsignal,TP0.ForPMOStypeuppersidedriving, thePWMoutputisanactivelowsignalwhileforNMOStypelowersidedrivingthePWMoutput isanactivehighsignal.WhenthesecomplementaryPWMoutputsarebothusedtodrivetheupper andlowsides,thedeadtimegeneratormustbeenabledusingtheDTENbitintheCPRregister,and thenadeadtime,whichisprogrammableusingtheDTPSCandDTbitfieldsintheCPRregister, willbeinsertedtopreventexcessiveDCcurrents.Thedeadtimewillbeinsertedwheneverthe risingedgeofthedeadtimegeneratorinputsignaloccurs.Withadeadtimeinsertion,theoutput signalsexperienceadelaybeforebeingeventuallysentouttotheexternalpowertransistors. ThePWM0HorPWM0Lsignal,canbecontrolledbythePWMHorPWMLsignalsrepectively orremainsatacertainlevel,thesearedeterminedbytheDCPD_CTL1andDCPD_CTL0bits repectively.ThePWM0HandPWM0Lpinsarepin-sharedwithotherfuncitonsandcanbeselected ascomplementaryPWMoutputsbytherevelantpin-sharedcontrolbitsintheCTRL4register. TP0 Dead Ti�e Gene�ato� DTPSC [1:0] P�es�ale� fH A B DT [�:0] E C D PWMH PWML fD MUX 0 0 1 DCPD_CTL0 PWM0L PWM0H DCPD_CTL1 MUX 1 0 1 Complementary PWM Output Block Diagram TP0 A B C D E Dead Ti�e Dead Ti�e Dead Ti�e Dead Ti�e Dead Ti�e Dead Ti�e Complementary PWM Output Waveform |
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