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HT45F2020 数据表(PDF) 45 Page - Holtek Semiconductor Inc

部件名 HT45F2020
功能描述  Sound Effect Generator Flash MCU
PDF  85 Pages
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制造商  HOLTEK [Holtek Semiconductor Inc]
网页  http://www.holtek.com
标志 HOLTEK - Holtek Semiconductor Inc

HT45F2020 数据表(HTML) 45 Page - Holtek Semiconductor Inc

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Rev. 1.00
44
April 11, 2017
Rev. 1.00
45
April 11, 2017
HT45F2020/HT45F2022
Sound Effect Generator Flash MCU
HT45F2020/HT45F2022
Sound Effect Generator Flash MCU
Periodic Type TM – PTM
ThePeriodicTypeTMcontainsfiveoperatingmodes,whichareCompareMatchOutput,Timer/
EventCounter,CaptureInput,SinglePulseOutputandPWMOutputmodes.ThePeriodicTMcan
alsobecontrolledwithtwoexternalinputpinsandcandrivetwoexternaloutputpin.
PTM Core
PTM Input Pin
PTM Output Pin
10-bit PTM
PTCK, PTPI
PTP, PTPB
fSYS
fSYS/4
fH/64
fH/16
fSUB
PTCK
000
001
010
011
100
101
110
111
PTCK2~PTCK0
10-bit Count-up Counter
10-bit Comparator P
CCRP
b0~b9
b0~b9
10-bit Comparator A
PTON
PTPAU
Comparator A Match
Comparator P Match
Counter Clear 0
1
Output
Control
Polarity
Control
Pin
Control
PTP
PTOC
PTM1, PTM0
PTIO1, PTIO0
PTMAF Interrupt
PTMPF Interrupt
PTPOL
PAS0
CCRA
PTCCLR
Edge
Detector
PTPI
PTIO1, PTIO0
fSUB
1
0
Pin
Control
PTCAPTS
PTPB
PAS0
Periodic Type TM Block Diagram
Periodic TM Operation
ThesizeofPeriodicTMis10-bitwideanditscoreisa10-bitcount-upcounterwhichisdrivenby
auserselectableinternalorexternalclocksource.Therearealsotwointernalcomparatorswiththe
names,ComparatorAandComparatorP.Thesecomparatorswillcomparethevalueinthecounter
withCCRPandCCRAregisters.TheCCRPandCCRAcomparatorsare10-bitwidewhosevalueis
respectivelycomparedwithallcounterbits.
Theonlywayofchangingthevalueofthe10-bitcounterusingtheapplicationprogramisto
clearthecounterbychangingthePTONbitfromlowtohigh.Thecounterwillalsobecleared
automaticallybyacounteroverfloworacomparematchwithoneofitsassociatedcomparators.
Whentheseconditionsoccur,aPTMinterruptsignalwillalsousuallybegenerated.ThePeriodic
TypeTMcanoperateinanumberofdifferentoperationalmodes,canbedrivenbydifferentclock
sourcesincludinganinputpinandcanalsocontroltheoutputpins.Alloperatingsetupconditions
areselectedusingrelevantinternalregisters.



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