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HT45F3230 Datasheet(PDF) 52 Page - Holtek Semiconductor Inc

Part # HT45F3230
Description  IR Sensing/Motor Driving Flash MCU
PDF  148 Pages
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT45F3230 Datasheet(HTML) 52 Page - Holtek Semiconductor Inc

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Rev. 1.00
52
January 13, 2017
Rev. 1.00
53
January 13, 2017
HT45F3230
IR Sensing/Motor Driving Flash MCU
HT45F3230
IR Sensing/Motor Driving Flash MCU
PxPU Register
Bit
7
6
5
4
3
2
1
0
Name
PxPU7
PxPU6
PxPU5
PxPU4
PxPU3
PxPU2
PxPU1
PxPU0
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
PxPUn:I/OPortxPinpull-highfunctioncontrol
0:Disable
1:Enable
ThePxPUnbitisusedtocontrolthepinpull-highfunction.Herethe“x”canbeA,BorD.
However,theactualavailablebitsforeachI/OPortmaybedifferent.
Port A Wake-up
TheHALTinstructionforcesthemicrocontrollerintotheSLEEPorIDLEModewhichpreserves
power,afeaturethatisimportantforbatteryandotherlow-powerapplications.Variousmethods
existtowake-upthemicrocontroller,oneofwhichistochangethelogicconditionononeofthePort
Apinsfromhightolow.Thisfunctionisespeciallysuitableforapplicationsthatcanbewokenup
viaexternalswitches.EachpinonPortAcanbeselectedindividuallytohavethiswake-upfeature
usingthePAWUregister.
Notethatthewake-upfunctioncanbecontrolledbythewake-upcontrolregistersonlywhenthe
pin-sharedfunctionalpinisselectedasgeneralpurposeinput/outputandtheMCUentersthePower
downmode.
PAWU Register
Bit
7
6
5
4
3
2
1
0
Name
PAWU7
PAWU6
PAWU5
PAWU4
PAWU3
PAWU2
PAWU1
PAWU0
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
Bit7~0
PAWU7~PAWU0:PA7~PA0wake-upfunctioncontrol
0:Disable
1:Enable
I/O Port Control Registers
EachI/OporthasitsowncontrolregisterknownasPAC,PBCandPDC,tocontroltheinput/
outputconfiguration.Withthiscontrolregister,eachCMOSoutputorinputcanbereconfigured
dynamicallyundersoftwarecontrol.EachpinoftheI/Oportsisdirectlymappedtoabitinits
associatedportcontrolregister.FortheI/Opintofunctionasaninput,thecorrespondingbitofthe
controlregistermustbewrittenasa“1”.Thiswillthenallowthelogicstateoftheinputpintobe
directlyreadbyinstructions.Whenthecorrespondingbitofthecontrolregisteriswrittenasa“0”,
theI/OpinwillbesetupasaCMOSoutput.Ifthepiniscurrentlysetupasanoutput,instructions
canstillbeusedtoreadtheoutputregister.However,itshouldbenotedthattheprogramwillinfact
onlyreadthestatusoftheoutputdatalatchandnottheactuallogicstatusoftheoutputpin.



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