EFM32WG Datasheet, PDF (777/834 Pages) List of Unclassifed Manufacturers – The EFM32WG Wonder Gecko is the ideal choice for demanding 8-, 16-, and 32-bit energy sensitive applications.

Table 33.3. LCD Wave Settings
WAVE
0
1
Mode
LowPower
Normal
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Wave mode
Low power optimized waveform output
Regular waveform output
Figure 33.2. LCD Low-power 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 St art
Fram e End
Figure 33.3. 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 St art
Fram e End
33.3.3 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.
33.3.3.1 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 33.4. LCD Static Bias and Multiplexing - LCD_COM0
V_LC0 (V_LCD)
V_LC3 (V_SS)
Fram e St art
Fram e End
33.3.3.2 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)
2013-05-08 - Wonder Gecko Family - d0233_Rev0.50
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