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HT46R003B датащи(PDF) 30 Page - Holtek Semiconductor Inc

номер детали HT46R003B
подробное описание детали  Cost-Effective A/D 8-bit OTP MCU
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производитель  HOLTEK [Holtek Semiconductor Inc]
домашняя страница  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT46R003B датащи(HTML) 30 Page - Holtek Semiconductor Inc

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HT46R003B
Cost-Effective A/D 8-bit OTP MCU
HT46R003B
Cost-Effective A/D 8-bit OTP MCU
Input/Output Ports
HoltekmicrocontrollersofferconsiderableflexibilityontheirI/Oports.Mostpinscanhaveeitheran
inputoroutputdesignationunderuserprogramcontrol.Additionally,astherearepull-highresistors
andwake-upsoftwareconfigurations,theuserisprovidedwithanI/Ostructuretomeettheneedsof
awiderangeofapplicationpossibilities.
Thedeviceprovidesbidirectionalinput/outputlineslabeledwithportnamesPAandPB.TheseI/O
portsaremappedtotheRAMDataMemorywithspecificaddressesasshownintheSpecialPurpose
DataMemorytable.AlloftheseI/Oportscanbeusedforinputandoutputoperations.Forinput
operation,theseportsarenon-latching,whichmeanstheinputsmustbereadyattheT2risingedge
ofinstruction“MOVA,[m]”,wheremdenotestheportaddress.Foroutputoperation,allthedatais
latchedandremainsunchangeduntiltheoutputlatchisrewritten.
Register
Name
Bit
7
6
5
4
3
2
1
0
PA
PA7
PA6
PA5
PA�
PA3
PA�
PA1
PA0
PAC
PAC7
PAC6
PAC5
PAC�
PAC3
PAC�
PAC1
PAC0
PAPU
PAPU6
PAPU5
PAPU�
PAPU3
PAPU�
PAPU1
PAPU0
PAWU
PAWU7
PAWU6
PAWU5
PAWU�
PAWU3
PAWU�
PAWU1
PAWU0
PB
PB5
PB�
PB3
PB�
PB1
PB0
PBC
PBC5
PBC�
PBC3
PBC�
PBC1
PBC0
PBPU
PBPU5
PBPU�
PBPU3
PBPU�
PBPU1
PBPU0
I/O Registers List
Pull-high Resistors
Manyproductapplicationsrequirepull-highresistorsfortheirswitchinputsusuallyrequiringthe
useofanexternalresistor.Toeliminatetheneedfortheseexternalresistors,allI/Opins,when
configuredasaninputhavethecapabilityofbeingconnectedtoaninternalpull-highresistor.These
pull-highresistorsareselectedusingaregistersPAPUandPBPUlocatedintheDataMemory.The
pull-highresistorsareimplementedusingweakPMOStransistors.NotethatpinPA7doesnothave
apull-highresistorselection.
PAPU Register
Bit
7
6
5
4
3
2
1
0
Name
PAPU6
PAPU5
PAPU�
PAPU3
PAPU�
PAPU1
PAPU0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
POR
0
0
0
0
0
0
0
Bit7
Unimplemented,readas"0"
Bit6~0
PAPU6~PAPU0:PortAbit6~bit0pull-highcontrol
0:Disable
1:Enable


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