EFM32WG Datasheet, PDF (778/834 Pages) List of Unclassifed Manufacturers – The EFM32WG Wonder Gecko is the ideal choice for demanding 8-, 16-, and 32-bit energy sensitive applications.

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Figure 33.5. LCD 1/2 Bias and Duplex Multiplexing - LCD_COM0
V_LC0 (V_LCD)
V_LC1 (1/2V_LCD)
V_LC3 (V_SS)
Fram e St art
Fram e End
Figure 33.6. LCD 1/2 Bias and Duplex Multiplexing - LCD_COM1
V_LC0 (V_LCD)
V_LC1 (1/2V_LCD)
V_LC3 (V_SS)
Fram e St art
Fram e End
1/2 bias and duplex multiplexing - LCD_SEG0
The LCD_SEG0 waveform on the left is just an example to illustrate how different segment waveforms
can be multiplexed with the LCD_COM lines in order to turn on and off LCD pixels. As illustrated in the
figures below, this waveform will turn ON pixels connected to LCD_COM0, while pixels connected to
LCD_COM1 will be turned OFF.
Figure 33.7. LCD 1/2 Bias and Duplex Multiplexing - LCD_SEG0
V_LC0 (V_LCD)
V_LC1 (1/2V_LCD)
V_LC3 (V_SS)
Fram e St art
Fram e End
Figure 33.8. LCD 1/2 Bias and Duplex Multiplexing - LCD_SEG0 Connection
com 0
com 1
1/2 bias and duplex multiplexing - LCD_SEG0-LCD_COM0
• DC voltage = 0 (over one frame)
• V_RMS = 0.79 × V_{LCD_OUT}
• The LCD display pixel that is connected to LCD_SEG0 and LCD_COM0 will be ON with this waveform.
2013-05-08 - Wonder Gecko Family - d0233_Rev0.50
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