BU97931FV-LB Datasheet, PDF (21/32 Pages) Rohm – Multifunction LCD Segment Driver

BU97931FV-LB MAX 112 segments (SEG28×COM4)
Datasheet
1/1Duty (Static)
Line inversion
SEGn SEGn+1 SEGn+2 SEGn+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+1 SEGn+2 SEGn+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
COM2
waveform
COM3 / COM0 _COM3
is same
waveform
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 15. Waveform of Line Inversion
-Vreg
Figure 16. Waveform of Frame Inversion
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111ï½¥15ï½¥001
21/29
TSZ02201-0P4P0D300490-1-2
26.Feb.2014 Rev.002