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Color Liquid Crystal Display Controller
TFT, HR-TFT, and AD-TFT LCD panels utilize color palette RAM. For these panels, each
16-bit palette entry is composed of 5 bpp, plus a common intensity bit. In addition, the total
number of supported colors can be doubled from 32,768 to 65,536 if the Intensity bit is uti-
lized and applied simultaneously to all three color components (R, G, and B).
Table 13-5 and Table 13-6 show the bpp supported for TFT, HR-TFT, and AD-TFT panels.
Table 13-7 shows the bpp for monochrome STN panels.
13-8
Table 13-5. Supported TFT, HR-TFT, and AD-TFT LCD Panels
bpp
SOURCE
1
Palletized 2 colors selected from 65,536 available colors
2
Palletized 4 colors selected from 65,536 available colors
4
Palletized 16 colors selected from 65,536 available colors
8
Palletized 256 colors selected from 65,536 available colors
12
Direct
4:4:4 RGB
Table 13-6. Supported Color STN LCD Panels
bpp
SOURCE
1
Palletized 2 colors selected from 3,375 available colors
2
Palletized 4 colors selected from 3,375 available colors
4
Palletized 16 colors selected from 3,375 available colors
8
Palletized 256 colors selected from 3,375 available colors
12
Direct
4:4:4 RGB
NOTE: 3,375 colors = (15 RED) × (15 BLUE) × (15 GREEN).
Table 13-7. Supported Mono-STN LCD Panels
bpp
SOURCE
1
Palletized 2-level grayscale selected from 15 levels
2
Palletized 4-level grayscale selected from 15 levels
4
Palletized 15-level grayscale selected from 15 levels
7/15/03
LH75400/01/10/11 (Preliminary) User's Guide
HR-TFT (UP TO 16-BIT BUS)
COLOR STN
(SINGLE AND DUAL PANEL, 8-BIT BUS)
MONO STN (SINGLE, 4-BIT BUS)
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