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HT48R068B Arkusz danych(PDF) 71 Page - Holtek Semiconductor Inc |
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HT48R068B Arkusz danych(HTML) 71 Page - Holtek Semiconductor Inc |
71 / 118 page Rev. 1.30 70 �e���a�� 0�� �01� Rev. 1.30 71 �e���a�� 0�� �01� HT48R068B/HT48R069B Enhanced I/O 8-Bit OTP MCU HT48R068B/HT48R069B Enhanced I/O 8-Bit OTP MCU LCD SCOM Function ThedeviceshavethecapabilityofdrivingexternalLCDpanels.ThecommonpinsforLCDdriving, SCOM0~SCOM3,arepinsharedwiththePB0~PB3pins.TheLCDsignals,COMandSEG,are generatedusingtheapplicationprogram. LCD Operation AnexternalLCDpanelcanbedrivenusingthisdevicebyconfiguringthePB0~PB3pinsascommon pinsandusingotheroutputportslinesassegmentpins.TheLCDdriverfunctioniscontrolled usingtheSCOMCregisterwhichinadditiontocontrollingtheoverallon/offfunctionalsocontrols thebiasvoltagesetupfunction.ThisenablestheLCDCOMdrivertogeneratethenecessaryVDD/2 voltagelevelsforLCD1/2biasoperation.TheSCOMENbitintheSCOMCregisteristheoverall mastercontrolfortheLCDDriver,howeverthisbitisusedinconjunctionwiththeCOMnENbitsto selectwhichPortBpinsareusedforLCDdriving.NotethatthePortControlregisterdoesnotneed tofirstsetupthepinsasoutputstoenabletheLCDdriveroperation. V DD SC OM 0~ SC OM 3 SC OM EN CO Mn EN V DD /2 SC OM o per at i ng cu rre nt SCOM Circuit SCOMEN COMnEN Pin Function O/P Level 0 X I/O 0 o� 1 1 0 I/O 0 o� 1 1 1 SCOMn VDD/� Output Control |
Podobny numer części - HT48R068B_15 |
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Podobny opis - HT48R068B_15 |
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