BU9799KV Datasheet, PDF (15/28 Pages) Rohm – Standard LCD Segment Driver

BU9799KV MAX 200 segments (SEG50×COM4)
(1/2bias)
Line inversion
SEGn SEGn+1 SEGn+2 SEGn+3
COM0 stateA
COM1 stateB
COM2
COM3
V0
COM0
VSS
V0
COM1
VSS
V0
COM2
COM3
VSS
VLCD
VSS
V0
SEGn
VSS
V0
SEGn+1
VSS
V0
SEGn+2
VSS
V0
SEGn+3
VSS
1frame
stateA
(COM0-SEGn)
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
VLCD
SEGn
VSS
V0
SEGn+1
VSS
V0
SEGn+2
VSS
V0
SEGn+3
VSS
1frame
stateA
(COM0-SEGn)
Datasheet
stateB
(COM1-SEGn)
stateB
(COM1-SEGn)
Figure 15. LCD waveform in line inversion (1/2bias) Figure 16. LCD waveform in frame inversion (1/2bias)
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