S1D13705 Epson Electronics America, Inc., S1D13705 Datasheet - Page 110

• Manufacturer Part Number: S1D13705
• Description: S1d13705 Embedded Memory Lcd Controller
• Manufacturer: Epson Electronics America, Inc.

Page 18
S1D13705
X27A-G-002-02
2 bpp color
When the S1D13705 is configured for 2 bpp color mode, the displayed colors are selected
from the first four entries of the Look-Up Table. The LUT entries may be set to any of the
4096 possible colors.
Each byte in the display buffer contains four adjacent pixels. If a bit combination has a
value of “00” then the color in LUT index 0 is displayed. A bit value of “01” results in the
color in LUT index 1 being displayed. Likewise the bit combination of “10” displays from
the third LUT entry and “11” displays a color from the fourth LUT entry.
The following table shows the example values for 2 bit-per-pixel display mode.
Table 4-2: Example LUT Values for 2 Bpp Color Mode
Index
FF
00
01
02
03
04
...
Red
A0
00
70
F0
00
00
00
indicates unused entries
Green
A0
F0
00
70
00
00
00
Blue
A0
F0
00
70
00
00
00
Epson Research and Development
Programming Notes and Examples
Vancouver Design Center
Issue Date: 01/02/13