SED1354 Datasheet, PDF (160/472 Pages) Epson Company – Color Graphics LCD/CRT Controller

Page 20
Epson Research and Development
Vancouver Design Center
This recommended palette assumes that you are using only bank 0 of the three color components.
By programming in the above fashion the following colors will result:
Table 3-12: Examples of 256 Pixel Colors Using Linear LUT
Pixel Value
(binary)
000 000 00
000 000 10
000 100 00
000 100 10
100 000 00
100 000 10
100 100 00
100 100 10
Color
black
dark blue
dark green
dark cyan
dark red
dark magenta
dark yellow
gray
Pixel Value
(binary)
000 000 00
000 000 11
000 111 00
000 111 11
111 000 00
111 000 11
111 111 00
111 111 11
Color
black
bright blue
bright green
bright cyan
bright red
bright magenta
bright yellow
white
15 bpp Color
Since the Look-Up Table is bypassed in this mode, the LUT programming is unimportant. The
colors on the display are derived from only the top 4 bits of each color combination. Resulting in a
maximum of 2¹²=4096 colors.
16 bpp Color
Since the Look-Up Table is bypassed in this mode, the LUT programming is unimportant. The
colors on the display are derived from only the top 4 bits of each color combination. Resulting in a
maximum of 2¹²=4096 colors.
Gray Shade Modes
In gray shade mode, the SED1354 treats the Green LUT as a 16 position, 4 bit wide monochrome
LUT. Depending on the selected pixel size, this LUT will provide from 1 to 4 banks.
1 bpp Gray Shade
The SED1354 has no true Black-and-White mode. 1 bpp Gray consists of a single bank of two
entries. For Black-and-White mode, the LUT entry must be programmed as such:
.
Table 3-13: Recommended LUT Values for 1 bpp Gray Shades
Index
(hex)
00
01
Look-Up Table
Data
(hex)
00
0F
SED1354
X19A-G-002-06
Programming Notes and Examples
Issue Date: 98/10/28