BU91799KV-M Datasheet, PDF (15/29 Pages) Rohm – Low Duty LCD Segment Driver for Automotive Application

BU91799KV-M MAX 200 segments (SEG50×COM4)
LCD Driving Waveform
(1/3bias)
Line Inversion
SEGn SEGn+1 SEGn+2 SEGn+3
COM0 stateA
COM1 stateB
COM2
COM3
Frame Inversion
SEGn SEGn+1 SEGn+2 SEGn+3
COM0 stateA
COM1 stateB
COM2
COM3
V0
COM0
VSS
V0
COM1
VSS
V0
COM2
VSS
V0
COM3
VSS
V0
SEGn
VSS
V0
SEGn+1
VSS
V0
SEGn+2
VSS
V0
SEGn+3
VSS
1frame
V0
COM0
VSS
V0
COM1
VSS
V0
COM2
VSS
V0
COM3
VSS
V0
SEGn
VSS
V0
SEGn+1
VSS
V0
SEGn+2
VSS
V0
SEGn+3
VSS
1frame
stateA
(COM0-SEGn)
stateA
(COM0-SEGn)
stateB
(COM1-SEGn)
stateB
(COM1-SEGn)
Figure 14. LCD Waveform in Line Inversion (1/3bias)
Figure 15. LCD Waveform in Frame Inversion (1/3bias)
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8. Feb. 2016 Rev.001