BU97981KV-E2 Datasheet, PDF (34/50 Pages) Rohm – Multi-function LCD Segment Drivers

BU97981xxx Series MAX 196 segments (SEG49xCOM4)
Datasheet
1/1Duty (Static)
Line inversion
SEGn SEGn+1SEGn+2SEGn+3
COM0 stateA stateB
COM1
COM2
COM3
When 1/1duty (Static)
COM1 / COM0 is same
waveform
COM2 / COM0 is same
waveform
Vreg
COM0
VSS
Vreg
COM1
VSS
Vreg
COM2
VSS
Vreg
COM3
VSS
Vreg
SEGn
VSS
Vreg
SEGn+1
VSS
Vreg
SEGn+2
VSS
Vreg
SEGn+3
VSS
Vreg
1frame
stateA
Frame inversion
SEGn SEGn+1SEGn+2SEGn+3
COM0 stateA stateB
COM1
COM2
COM3
When 1/1duty (Static)
COM1 / COM0 is same
waveform
COM2 / COM0 is same
waveform
Vreg
1frame
COM0
When 1/1duty
(Static)
COM1 / COM0
is same
waveform
COM1
COM2 / COM0
is same
waveform
COM2
COM3 / COM0
is same
waveform
COM3
VSS
Vreg
VSS
Vreg
VSS
Vreg
VSS
Vreg
SEGn
VSS
Vreg
SEGn+1
VSS
Vreg
SEGn+2
VSS
Vreg
SEGn+3
VSS
Vreg
stateA
-Vreg
Vreg
stateB
-Vreg
Vreg
stateB
-Vreg
Figure 23. Waveform of Line Inversion
-Vreg
Figure 24. Waveform of Frame Inversion
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TSZ02201-0A2A0D300110-1-2
10.Apr.2015 Rev.006