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HT46R068B Arkusz danych(PDF) 84 Page - Holtek Semiconductor Inc |
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HT46R068B Arkusz danych(HTML) 84 Page - Holtek Semiconductor Inc |
84 / 135 page Rev. 1.50 84 �e���a�� 05� �015 Rev. 1.50 85 �e���a�� 05� �015 HT46R068B/HT46R069B Enhanced A/D 8-Bit OTP MCU HT46R068B/HT46R069B Enhanced A/D 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 - HT46R068B_15 |
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Podobny opis - HT46R068B_15 |
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