UPD78F0411GA-GAM-AX Datasheet, PDF (391/564 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

CHAPTER 15 LCD CONTROLLER/DRIVER
Figure 15-8 shows the common signal waveforms, and Figure 15-9 shows the voltages and phases of the common
and segment signals.
Figure 15-8. Common Signal Waveforms
COMn
(Static display)
TF = T
(a) Static display mode
VLC0
VLCD
LVSS
T: One LCD clock period
TF: Frame frequency
COMn
(Two-time slot mode)
(b) 1/2 bias method
TF = 2 × T
COMn
(Three-time slot mode)
TF = 3 × T
VLC0
VLC2 VLCD
LVSS
VLC0
VLC2 VLCD
LVSS
T: One LCD clock period
TF: Frame frequency
(c) 1/3 bias method
COMn
(Three-time slot mode)
TF = 3 × T
COMn
(Four-time slot mode)
TF = 4 × T
VLC0
VLC1
VLC2
VLCD
LVSS
VLC0
VLC1
VLC2
VLCD
LVSS
T: One LCD clock period
TF: Frame frequency
User’s Manual U18698EJ1V0UD
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