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HT45F75 датащи(PDF) 68 Page - Holtek Semiconductor Inc |
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HT45F75 датащи(HTML) 68 Page - Holtek Semiconductor Inc |
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68 / 190 page ![]() Rev. 1.10 �8 De�e��e� 1�� �01� Rev. 1.10 �9 De�e��e� 1�� �01� HT45F75 Body Fat Scale Flash MCU HT45F75 Body Fat Scale Flash MCU I/O Port Control Registers EachI/OporthasitsowncontrolregisterknownasPAC~PDC,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 Na�e D7 D� D5 D� D3 D� D1 D0 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 Bit7~0 PortAbit7~bit0Input/OutputControl 0:Output 1:Input PBC Register Bit 7 6 5 4 3 2 1 0 Na�e D7 D� D5 D� D3 D� D1 D0 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 Bit7~0 PortBbit7~bit0Input/OutputControl 0:Output 1:Input PCC Register Bit 7 6 5 4 3 2 1 0 Na�e D7 D� D5 D� D3 D� D1 D0 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 Bit7~0 PortCbit7~bit0Input/OutputControl 0:Output 1:Input PDC Register Bit 7 6 5 4 3 2 1 0 Na�e — — — — — D� D1 D0 R/W — — — — — R/W R/W R/W POR — — — — — 1 1 1 Bit7~3 Unimplemented,readas"0" Bit2~0 PortDbit2~bit0Input/OutputControl 0:Output 1:Input |
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