BU91796MUF-M Datasheet, PDF (13/27 Pages) Rohm – Low Duty LCD Segment Driver for Automotive application

BU91796MUF-M MAX 80 segments (SEG20×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
Datasheet
VDD
COM0
VLCD
VDD
COM1
VLCD
VDD
COM2
VLCD
VDD
COM3
SEGn
VLCD
VDD
VLCD
VDD
SEGn+1
VLCD
VDD
SEGn+2
VLCD
VDD
SEGn+3
VLCD
stateA
(COM0-SEGn)
(VDD-VLCD)
2/3 (VDD-VLCD)
1/3 (VDD-VLCD)
0
-1/3 (VDD-VLCD)
-2/3 (VDD-VLCD)
- (VDD-VLCD)
stateB
(COM1-SEGn)
(VDD-VLCD)
2/3 (VDD-VLCD)
1/3 (VDD-VLCD)
0
-1/3 (VDD-VLCD)
-2/3 (VDD-VLCD)
- (VDD-VLCD)
1frame
Figure 14. LCD Waveform at Line Inversion (1/3bias)
VDD
COM0
VLCD
VDD
COM1
VLCD
VDD
COM2
VLCD
VDD
COM3
SEGn
VLCD
VDD
VLCD
VDD
SEGn+1
VLCD
VDD
SEGn+2
VLCD
VDD
SEGn+3
VLCD
stateA
(COM0-SEGn)
(VDD-VLCD)
2/3 (VDD-VLCD)
1/3 (VDD-VLCD)
0
-1/3 (VDD-VLCD)
-2/3 (VDD-VLCD)
- (VDD-VLCD)
stateB
(COM1-SEGn)
(VDD-VLCD)
2/3 (VDD-VLCD)
1/3 (VDD-VLCD)
0
-1/3 (VDD-VLCD)
-2/3 (VDD-VLCD)
-(VDD-VLCD)
1frame
Figure 15. LCD Waveform at Frame Inversion (1/3bias)
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TSZ02201-0P4P0D301020-1-2
8.Feb.2016 Rev.001