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HT9B95 датащи(PDF) 12 Page - Holtek Semiconductor Inc

номер детали HT9B95
подробное описание детали  RAM Mapping 39횞8 / 43횞4 LCD Driver
PDF  32 Pages
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производитель  HOLTEK [Holtek Semiconductor Inc]
домашняя страница  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT9B95 датащи(HTML) 12 Page - Holtek Semiconductor Inc

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Rev. 1.10
12
November 25, 2015
HT9B95A/B/G
LCD Bias Generator
ThemaxvoltageleveloftheLCDdrivingvoltagenamedasV0canbeadjustedthroughtheLVAcommand
setting.Thefull-scaleLCDvoltage,VOP,isobtainedfrom(V0-VSS).
FractionalLCDbiasingvoltages,knownas1/3or1/4biasvoltage,areobtainedfromaninternalvoltagedivider
severalofseriesresistorsconnectedbetweenVLCDandVSS.Certainresistorscanbeswitchedoutofcircuitstopro-
ertainresistorscanbeswitchedoutofcircuitstopro-
resistorscanbeswitchedoutofcircuitstopro-
scanbeswitchedoutofcircuitstopro-
canbeswitchedoutofcircuitstopro-
switchedoutofcircuitstopro-
switchedoutofcircuitstopro-
stopro-
topro-
videa1/3or1/4biasvoltagelevelconfiguration.
LCD Drive Mode Waveforms
• WhentheLCDdrivemodeisselectedas1/4dutyand1/3bias,thewaveformandLCDdisplayisshownas
follows:
SEG n+2
SEG n+2
SEG n
SEG n
COM0
COM0
COM1
COM1
State1
(on)
State1
(on)
State2
(off)
State2
(off)
tLCD
COM2
COM2
SEG n+3
SEG n+3
COM3
COM3
SEG n+1
SEG n+1
V0
V0
2Vop/3
2Vop/3
Vop/3
Vop/3
VSS
VSS
A Type inversion
A Type inversion
SEG n+2
SEG n+2
SEG n
SEG n
COM0
COM0
COM1
COM1
tLCD
COM2
COM2
SEG n+3
SEG n+3
COM3
COM3
SEG n+1
SEG n+1
V0
V0
2Vop/3
2Vop/3
Vop/3
Vop/3
VSS
VSS
V0
V0
2Vop/3
2Vop/3
Vop/3
Vop/3
VSS
VSS
V0
V0
2Vop/3
2Vop/3
Vop/3
Vop/3
VSS
VSS
V0
V0
2Vop/3
2Vop/3
Vop/3
Vop/3
VSS
VSS
V0
V0
2Vop/3
2Vop/3
Vop/3
Vop/3
VSS
VSS
V0
V0
2Vop/3
2Vop/3
Vop/3
Vop/3
VSS
VSS
V0
V0
2Vop/3
2Vop/3
Vop/3
Vop/3
VSS
VSS
V0
V0
2Vop/3
2Vop/3
Vop/3
Vop/3
VSS
VSS
B Type inversion
B Type inversion
V0
V0
2Vop/3
2Vop/3
Vop/3
Vop/3
VSS
VSS
V0
V0
2Vop/3
2Vop/3
Vop/3
Vop/3
VSS
VSS
V0
V0
2Vop/3
2Vop/3
Vop/3
Vop/3
VSS
VSS
V0
V0
2Vop/3
2Vop/3
Vop/3
Vop/3
VSS
VSS
V0
V0
2Vop/3
2Vop/3
Vop/3
Vop/3
VSS
VSS
V0
V0
2Vop/3
2Vop/3
Vop/3
Vop/3
VSS
VSS
V0
V0
2Vop/3
2Vop/3
Vop/3
Vop/3
VSS
VSS
LCD status
LCD status
Waveforms for 1/4 duty drive mode with 1/3 bias (VOP=V0-VSS)
Note:tLCD=1/fLCD



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