BU9795AKS2 Datasheet, PDF (21/40 Pages) Rohm – Standard LCD Segment Drivers

BU9795Axxx Series MAX 140 segments (SEG35×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
VDD
COM0
VLCD
VDD
COM1
VLCD
VDD
COM2
COM3
VLCD
VDD
SEGn
VLCD
VDD
VLCD
VDD
SEGn+1
VLCD
VDD
SEGn+2
VLCD
VDD
SEGn+3
VLCD
1frame
VDD
COM0
VLCD
VDD
COM1
VLCD
VDD
COM2
COM3
VLCD
VDD
SEGn
VLCD
VDD
VLCD
VDD
SEGn+1
VLCD
VDD
SEGn+2
VLCD
VDD
SEGn+3
VLCD
1frame
stateA
(COM0-SEGn)
stateA
(COM0-SEGn)
Datasheet
stateB
(COM1-SEGn)
stateB
(COM1-SEGn)
Figure 24. Line inversion waveform(1/3bias)
Figure 25. Frame inversion waveform(1/3bias)
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TSZ02201-0A0A2D300020-1-2
12.July.2012 Rev.002