BU9799KV Datasheet, PDF (14/28 Pages) Rohm – Standard LCD Segment Driver

BU9799KV MAX 200 segments (SEG50×COM4)
Datasheet
●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 13. LCD waveform at line inversion (1/3bias)
Figure 14. LCD waveform at frame inversion (1/3bias)
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