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CHAPTER 18 LCD CONTROLLER/DRIVER
User’s Manual U15798EJ2V0UD
(3) Common signal and segment signal output waveforms
The voltages shown in Figures 18-10 and 18-11 are output for the common signals and segment signals.
The
±
V
LCD
ON voltage is only produced when the common signal and segment signal are both at the selection
voltage; other combinations produce the OFF voltage.
Figure 18-10. Common Signal Waveform
(a) Static display mode
(b) Dynamic display mode (1/3 bias method)
T:
One LCDCL cycle
T
F
: Frame frequency
SCOM0
(Static)
T
F
= T
V
LCD0
V
SS
V
LCD
COMn
(Divided by 3)
T
F
= 3
×
T
V
LCD0
V
SS
V
LCD
V
LCD1
V
LCD2
T
F
= 4
×
T
COMn
(Divided by 4)
V
LCD0
V
SS
V
LCD
V
LCD1
V
LCD2
Содержание mPD780344 Series
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