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HT45R2K-C Folha de dados(PDF) 79 Page - Holtek Semiconductor Inc |
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HT45R2K-C Folha de dados(HTML) 79 Page - Holtek Semiconductor Inc |
79 / 105 page Rev. 1.40 78 �a��� 1�� �01� Rev. 1.40 79 �a��� 1�� �01� HT45R2K-C/-B/-A Dual Slope 16K/8K/4K ASSP MCU for Body Fat Scale HT45R2K-C/-B/-A Dual Slope 16K/8K/4K ASSP MCU for Body Fat Scale LCDOUT Register Bit 7 6 5 4 3 2 1 0 Name LCDS7 LCDS6 LCDS� LCDS4 LCDS3 LCDS� LCDS1 LCDS0 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 LCDS7:SelectSEG7orI/O 0:I/O 1:SEG7 Bit6 LCDS6:SelectSEG6orI/O 0:I/O 1:SEG6 Bit5 LCDS5:SelectSEG5orI/O 0:I/O 1:SEG5 Bit4 LCDS4:SelectSEG4orI/O 0:I/O 1:SEG4 Bit3 LCDS3:SelectSEG3orI/O 0:I/O 1:SEG3 Bit2 LCDS2:SelectSEG2orI/O 0:I/O 1:SEG2 Bit1 LCDS1:SelectSEG1orI/O 0:I/O 1:SEG1 Bit0 LCDS0:SelectSEG0orI/O 0:I/O 1:SEG0 LCD Clock TheLCDclockisdrivenbythefSUBclock,whichthenpassesthroughadivider,thedivisionratioof whichisselectedbytheLCDclockselectionbits,LCDCK1andLCDCK0,intheCTRL0register toprovideaLCDclockfrequencyoffSUB/3,fSUB/4orfSUB/8.TheLCDclocksourcefSUBcanbe derivedfromtheLIRCorLXToscillatorselectedbytheselectionbit,namedFSUBS.Notethatthe fSUBclockcanbeenabledordisabledinthepowerdownmodebythefSUBclockcontrolbitFSUBC intheCTRL0register. LCD Driver Output TheoutputstructureofthedeviceLCDdrivercanbe24×8to28×4.TheLCDdriverbiastypehas RandCtype.TheC/RtypeandnumberofCOMandSEGisselectedbysoftwareoption.TheLCD driverhasafixed1/3bias. ThenatureofLiquidCrystalDisplaysrequirethatonlyACvoltagescanbeappliedtotheirpixels astheapplicationofDCvoltagestoLCDpixelsmaycausepermanentdamage.Forthisreason therelativecontrastofanLCDdisplayiscontrolledbytheactualRMSvoltageappliedtoeach pixel,whichisequaltotheRMSvalueofthevoltageontheCOMpinminusthevoltageapplied totheSEGpin.ThisdifferentialRMSvoltagemustbegreaterthantheLCDsaturationvoltage |
Nº de peça semelhante - HT45R2K-C_15 |
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Descrição semelhante - HT45R2K-C_15 |
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