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Figure 29.3. LCD Normal Waveform for LCD_COM0 in Quadruples Multiplex Mode, 1/3 Bias
V LC0 (V LCD )
V LC1 (2/3V LCD )
V LC2 (1/3V LCD )
V LC3 (V SS )
Fram e Start
Fram e End
29.3.3 Waveform Examples
The numbers on the illustration's y-axes in the following sections only indicate different voltage levels.
All examples are shown with low-power waveforms.
29.3.3.1 Waveforms with Static Bias and Multiplexing
? With static bias and multiplexing, each segment line can be connected to LCD_COM0. When the
segment line has the same waveform as LCD_COM0, the LCD panel pixel is turned off, while when
the segment line has the opposite waveform, the LCD panel pixel is turned on.
? DC voltage = 0 (over one frame)
? V RMS (on) = V LCD_OUT
? V RMS (off) = 0 (V SS )
Figure 29.4. LCD Static Bias and Multiplexing - LCD_COM0
V LC0 (V LCD )
V LC3 (V SS )
Fram e Start
Fram e End
29.3.3.2 Waveforms with 1/2 Bias and Duplex Multiplexing
In this mode, each frame is divided into 4 periods. LCD_COM[1:0] lines can be multiplexed with all
segment lines. Figures show 1/2 bias and duplex multiplexing (waveforms show two frames)
Figure 29.5. LCD 1/2 Bias and Duplex Multiplexing - LCD_COM0
V LC0 (V LCD )
V LC1 (1/2V LCD )
V LC3 (V SS )
Fram e Start
Fram e End
2011-04-12 - d0001_Rev1.10
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