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HT45F3830 Datasheet(PDF) 52 Page - Holtek Semiconductor Inc |
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HT45F3830 Datasheet(HTML) 52 Page - Holtek Semiconductor Inc |
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52 / 149 page  Rev. 1.10 5� �an�a�� 0�� �01� Rev. 1.10 53 �an�a�� 0�� �01� HT45F3830 Ultrasonic Atomizer Flash MCU HT45F3830 Ultrasonic Atomizer Flash MCU Input/Output Ports HoltekmicrocontrollersofferconsiderableflexibilityontheirI/Oports.Withtheinputoroutput designationofeverypinfullyunderuserprogramcontrol,pull-highselectionsforallportsand wake-upselectionsoncertainpins,theuserisprovidedwithanI/Ostructuretomeettheneedsofa widerangeofapplicationpossibilities. Thedeviceprovidesbidirectionalinput/outputlineslabeledwithportnamesPA~PC.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 PA� PA� PA5 PA4 PA3 PA� PA1 PA0 PAC PAC� PAC� PAC5 PAC4 PAC3 PAC� PAC1 PAC0 PAPU PAPU� PAPU� PAPU5 PAPU4 PAPU3 PAPU� PAPU1 PAPU0 PAWU PAWU� PAWU� PAWU5 PAWU4 PAWU3 PAWU� PAWU1 PAWU0 PB PB� PB� PB5 PB4 PB3 PB� PB1 PB0 PBC PBC� PBC� PBC5 PBC4 PBC3 PBC� PBC1 PBC0 PBPU PBPU� PBPU� PBPU5 PBPU4 PBPU3 PBPU� PBPU1 PBPU0 PC — — PC5 PC4 PC3 PC� PC1 PC0 PCC — — PCC5 PCC4 PCC3 PCC� PCC1 PCC0 PCPU — — PCPU5 PCPU4 PCPU3 PCPU� PCPU1 PCPU0 I/O Ports Register List Pull-high Resistors Manyproductapplicationsrequirepull-highresistorsfortheirswitchinputsusuallyrequiringthe useofanexternalresistor.Toeliminatetheneedfortheseexternalresistors,allI/Opins,when configuredasaninputhavethecapabilityofbeingconnectedtoaninternalpull-highresistor.These pull-highresistorsareselectedusingregistersPAPU~PCPU,andareimplementedusingweak PMOStransistors. NotethatonlywhentheI/OportsareconfiguredasdigitalinputorNMOSoutput,theinternalpull- highfunctionscanbeenabledusingthePAPU~PCPUregisters.Inotherconditions,internalpull- highfunctionsaredisabled. PAPU Register Bit 7 6 5 4 3 2 1 0 Name PAPU� PAPU� PAPU5 PAPU4 PAPU3 PAPU� PAPU1 PAPU0 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 PAPU7~PAPU0:PortAPinPull-highControl 0:Disable 1:Enable |
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