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HT45F4M 데이터시트(PDF) 97 Page - Holtek Semiconductor Inc

부품명 HT45F4M
상세설명  Lithium Battery Backup Power ASSP MCU
PDF  138 Pages
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제조업체  HOLTEK [Holtek Semiconductor Inc]
홈페이지  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT45F4M 데이터시트(HTML) 97 Page - Holtek Semiconductor Inc

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Rev. 1.10
96
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Rev. 1.10
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HT45F4M
Lithium Battery Backup Power ASSP MCU
HT45F4M
Lithium Battery Backup Power ASSP MCU
Complementary PWM Output
ThedeviceprovidesacomplementaryoutputpairofsignalswhichcanbeusedasaPWMdriver
signal.ThesignalissourcedfromtheTM1outputsignal,TP1.ForPMOStypeuppersidedriving,
thePWMoutputisanactivelowsignalwhileforNMOStypelowersidedrivingthePWMoutput
isanactivehighsignal.WhenthesecomplementaryPWMoutputsarebothusedtodrivethe
upperandlowsides,thedeadtimegeneratorwillautomaticallybeenabledandadeadtime,which
isprogrammableusingtheDTPSCandDTbitsintheCPRregister,willbeinsertedtoprevent
excessiveDCcurrents.Thedeadtimewillbeinsertedwhenevertherisingedgeofthedeadtime
generatorinputsignaloccurs.Withadeadtimeinsertion,theoutputsignalsareeventuallysent
outtotheexternalpowertransistors.Thedeadtimegeneratorwillonlybeenabledifbothofthe
complementaryoutputsareused,asdeterminedbytheOUTCPbitsintheTMPCregister.
TP1
DeadTime
Generator
DTPSC[1:0]
Prescaler
fH
A
B
DT[2:0]
E
C
D
PWMH
(drivinguppersidePMOS,activelow)
PWML
(drivinglowersideNMOS,activehigh)
fD
OUTCP[1:0]
Complementary PWM Output Block Diagram
TP1
A
B
C
D
E
DeadTime
DeadTime
DeadTime
DeadTime
DeadTime
DeadTime
Complementary PWM Output Waveform



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