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HT45F65 Datasheet(PDF) 77 Page - Holtek Semiconductor Inc

Part # HT45F65
Description  Glucose Meter 8-Bit Flash MCU
PDF  231 Pages
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT45F65 Datasheet(HTML) 77 Page - Holtek Semiconductor Inc

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Rev. 1.60
76
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Rev. 1.60
77
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HT45F65/HT45F66/HT45F67
Glucose Meter 8-Bit Flash MCU
Port A Wake-up
TheHALTinstructionforcesthemicrocontrollerintotheSLEEPorIDLEModewhichpreserves
power,afeaturethatisimportantforbatteryandotherlow-powerapplications.Variousmethods
existtowake-upthemicrocontroller,oneofwhichistochangethelogicconditionononeofthePort
Apinsfromhightolow.Thisfunctionisespeciallysuitableforapplicationsthatcanbewokenup
viaexternalswitches.EachpinonPortAcanbeselectedindividuallytohavethiswake-upfeature
usingthePAWUregister.
PAWU Register
Bit
7
6
5
4
3
2
1
0
�a�e
PAWU7
PAWU6
PAWU�
PAWU�
PAWU3
PAWU�
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:PortAbit7~bit0Wake-upControl
0:Disable
1:Enable
I/O Port Control Registers
EachI/OporthasitsowncontrolregisterknownasPAC~PHC,tocontroltheinput/output
configuration.Withthiscontrolregister,eachCMOSoutputorinputcanbereconfigured
dynamicallyundersoftwarecontrol.EachpinoftheI/Oportsisdirectlymappedtoabitinits
associatedportcontrolregister.FortheI/Opintofunctionasaninput,thecorrespondingbitofthe
controlregistermustbewrittenasa"1".Thiswillthenallowthelogicstateoftheinputpintobe
directlyreadbyinstructions.Whenthecorrespondingbitofthecontrolregisteriswrittenasa"0",
theI/OpinwillbesetupasaCMOSoutput.Ifthepiniscurrentlysetupasanoutput,instructions
canstillbeusedtoreadtheoutputregister.However,itshouldbenotedthattheprogramwillinfact
onlyreadthestatusoftheoutputdatalatchandnottheactuallogicstatusoftheoutputpin.
PAC Register
Bit
7
6
5
4
3
2
1
0
�a�e
PAC7
PAC6
PAC�
PAC�
PAC3
PAC�
PAC1
PAC0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
POR
1
1
1
1
1
1
1
1
PBC Register
Bit
7
6
5
4
3
2
1
0
�a�e
PBC7
PBC6
PBC�
PBC�
PBC3
PBC�
PBC1
PBC0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
POR
1
1
1
1
1
1
1
1
PCC Register (HT45F65)
Bit
7
6
5
4
3
2
1
0
�a�e
—
—
—
PCC�
PCC3
PCC�
PCC1
PCC0
R/W
—
—
—
R/W
R/W
R/W
R/W
R/W
POR
—
—
—
1
1
1
1
1



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