EFM32WG Datasheet, PDF (787/834 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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• V_RMS = 0.33 × V_{LCD_OUT}
• The LCD display pixel that is connected to LCD_SEG0 and LCD_COM1 will be OFF with this waveform
Figure 33.40. LCD 1/3 Bias and Quadruplex Multiplexing - LCD_SEG0-LCD_COM1
V_LC0 (V_LCD)
V_LC1 (2/3V_LCD)
V_LC2 (1/3V_LCD)
V_LC3 (V_SS)
-V_LC2 (1/3V_LCD)
-V_LC1 (2/3V_LCD)
-V_LC0 (V_LCD)
Fram e St art
Fram e End
1/3 bias and quadruplex multiplexing - LCD_SEG0-LCD_COM2
• DC voltage = 0 (over one frame)
• V_RMS = 0.58 × V_{LCD_OUT}
• The LCD display pixel that is connected to LCD_SEG0 and LCD_COM2 will be ON with this waveform
Figure 33.41. LCD 1/3 Bias and Quadruplex Multiplexing - LCD_SEG0-LCD_COM2
V_LC0 (V_LCD)
V_LC1 (2/3V_LCD)
V_LC2 (1/3V_LCD)
V_LC3 (V_SS)
-V_LC2 (1/3V_LCD)
-V_LC1 (2/3V_LCD)
-V_LC0 (V_LCD)
Fram e St art
Fram e End
1/3 bias and quadruplex multiplexing - LCD_SEG0-LCD_COM2
• DC voltage = 0 (over one frame)
• V_RMS = 0.33 × V_{LCD_OUT}
• The LCD display pixel that is connected to LCD_SEG0 and LCD_COM3 will be OFF with this waveform
Figure 33.42. LCD 1/3 Bias and Quadruplex Multiplexing- LCD_SEG0-LCD_COM3
V_LC0 (V_LCD)
V_LC1 (2/3V_LCD)
V_LC2 (1/3V_LCD)
V_LC3 (V_SS)
-V_LC2 (1/3V_LCD)
-V_LC1 (2/3V_LCD)
-V_LC0 (V_LCD)
Fram e St art
Fram e End
33.3.4 LCD Contrast
Different LCD panels have different characteristics and also temperature may affect the characteristics
of the LCD panels. To compensate for such variations, the LCD driver has a programmable contrast that
2013-05-08 - Wonder Gecko Family - d0233_Rev0.50
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