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Functional Description
Table 13-10. Color/Grayscale Intensities and Modulation Rates
Dither Value Intensity Modulation Rate
(4-Bit Value from Palette) (0% is White) (Ratio of ON to ON+OFF Pixels)
0000 0.0% 0
0001 14.3% 1/7
0010 20.0% 1/5
0011 25% 1/4
0100 33.3% 3/9
0101 40.0% 2/5
0110 44.4% 4/9
0111 50.0% 1/2
1000 55.6% 5/9
1001 60.0% 3/5
1010 66.6% 6/9
1011 75% 3/4
1100 80.0% 4/5
1101 85.7% 6/7
1110 93.3% 14/15
1111 100.0% 1
13.3.5.4.3 Summary of Color Depth
Table 13-11. Number of Colors/Shades of Gray Available on Screen
Passive Mode (LCDTFT = 0) Active Mode (LCDTFT = 1)
Number of
BPP Monochrome (LCDBW = 1) Color (LCDBW = 0) Color Only (LCDBW = 0)
1 2 palette entries to select within 2 palette entries to select within 2 palette entries to select within
15 grayscales 3375 possible colors 4096 possible colors
2 4 palette entries to select within 4 palette entries to select within 4 palette entries to select within
15 grayscales 3375 possible colors 4096 possible colors
4 16 palette entries to select within 16 palette entries to select within 16 palette entries to select within
15 grayscales 3375 possible colors 4096 possible colors
8 Not relevant since it would consist in 256 palette entries to select 256 palette entries to select within
256 palette entries to select within 3375 possible colors 4096 possible colors
15 grayscales, but exists anyway
12 x 3375 possible colors 4096 possible colors
16 x 3375 possible colors (STN_565 = 1) Up to 65536 possible colors
24 X X Up to 16.7 million colors
1115
SPRUH73H–October 2011–Revised April 2013 LCD Controller
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