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HT66F005 Datasheet(PDF) 51 Page - Holtek Semiconductor Inc |
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HT66F005 Datasheet(HTML) 51 Page - Holtek Semiconductor Inc |
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51 / 109 page  Rev. 1.30 50 ���i� ��� �01� Rev. 1.30 51 ���i� ��� �01� HT66F005/HT66F006 Cost-Effective A/D Flash MCU with EEPROM HT66F005/HT66F006 Cost-Effective A/D Flash MCU with EEPROM Register Reset (Power On) WDT Time-out/WDTC Software Reset (Normal Operation) WDT Time-out (HALT)* TM1�H - - - - - - 00 - - - - - - 00 - - - - - - uu EEC ---- 0000 ---- 0000 ---- uuuu Note:“-”standsfornotimplement “u”standsforunchanged “x”standsforunknown “y”standsfor"byregisterbitfunction" Input/Output Ports HoltekmicrocontrollersofferconsiderableflexibilityontheirI/Oports.Withtheinputoroutput designationofeverypinfullyunderuserprogramcontrol,pull-highselectionsforallportsand wake-upselectionsoncertainpins,theuserisprovidedwithanI/Ostructuretomeettheneedsofa widerangeofapplicationpossibilities. Thedeviceprovidesbidirectionalinput/outputlineslabeledwithportnamesPA.ThisI/Oportis mappedtotheRAMDataMemorywithspecificaddressesasshownintheSpecialPurposeData Memorytable.TheI/Oportcanbeusedforinputandoutputoperations.Forinputoperation,these portsarenon-latching,whichmeanstheinputsmustbereadyattheT2risingedgeofinstruction “MOVA,[m]”,wheremdenotestheportaddress.Foroutputoperation,allthedataislatchedand remainsunchangeduntiltheoutputlatchisrewritten. I/O Register List Register Name Bit 7 6 5 4 3 2 1 0 P�WU D� D6 D5 D4 D3 D� D1 D0 P�PU D� D6 D5 D4 D3 D� D1 D0 P�C D� D6 D5 D4 D3 D� D1 D0 P� D� D6 D5 D4 D3 D� D1 D0 PRM PRMS� PRMS6 PRMS5 PRMS4 PRMS3 PRMS� PRMS1 PRMS0 Pull-high Resistors Manyproductapplicationsrequirepull-highresistorsfortheirswitchinputsusuallyrequiringthe useofanexternalresistor.Toeliminatetheneedfortheseexternalresistors,allI/Opins,when configuredasaninputhavethecapabilityofbeingconnectedtoaninternalpull-highresistor. Thepull-highresistorisselectedusingregister,PAPU,andisimplementedusingweakPMOS transistors. |
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