EFM32WG Datasheet, PDF (788/834 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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adjusts the V_{LCD_OUT}. The contrast is set by CONLEV in LCD_DISPCTRL, and can be adjusted relative
to either V_DD (V_LCD) or Ground using CONCONF in LCD_DISPCTRL. See Table 33.4 (p. 788) and
Table 33.5 (p. 788) , Table 33.5 (p. 788) and Table 33.6 (p. 789) .
Table 33.4. LCD Contrast
BIAS
00
CONLEV
00000-11111
01
00000-11111
10
00000-11111
11
00000-11111
Equation
V_{LCD_OUT} = V_LCD x (0.61 x (1 + CONLEV/(2⁵ - 1)))
V_{LCD_OUT} = V_LCD x (0.53 x (1 + CONLEV/(2⁵ - 1)))
V_{LCD_OUT} = V_LCD x (0.61 x (1 + CONLEV/(2⁵ - 1)))
V_{LCD_OUT} = V_LCD x (0.61 x (1 + CONLEV/(2⁵ - 1)))
Range
CONLEV = 0 => V_{LCD_OUT} = 0.61V_LCD
CONLEV = 31 => V_{LCD_OUT} = V_LCD
CONLEV = 0 => V_{LCD_OUT} = 0.53V_LCD
CONLEV = 31 => V_{LCD_OUT} = V_LCD
CONLEV = 0 => V_{LCD_OUT} = 0.61V_LCD
CONLEV = 31 => V_{LCD_OUT} = V_LCD
CONLEV = 0 => V_{LCD_OUT} = 0.61V_LCD
CONLEV = 31 => V_{LCD_OUT} = V_LCD
Note
Reset value is maximum contrast
Table 33.5. LCD Contrast Function
CONCONF
0
1
Function
Contrast is adjusted relative to V_DD (V_LCD)
Contrast is adjusted relative to Ground
2013-05-08 - Wonder Gecko Family - d0233_Rev0.50
788
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