S1D13503 Epson Electronics America, Inc., S1D13503 Datasheet - Page 114

• Manufacturer Part Number: S1D13503
• Description: S1d13503 Graphics Lcd Controller
• Manufacturer: Epson Electronics America, Inc.

Page 18
3 GRAY SHADES / COLORS AND LOOK-UP TABLES
3.1 Pixels
3.1.1 Memory Organization for One Bit Pixel (Black-and-White)
3.1.2 Memory Organization for Two Bit Pixels (4 Colors/Gray Shades)
S1D13503
X18A-G-002-06
Bit 7
Pixel 0
Bit 0
Bit 7
Pixel 0
Bit 1
This section discusses how the S1D13503 shows color and monochrome images on LCD panels.
A pixel is physically stored in display memory as a series of bits. The more bits, the more colors the pixel can show.
The following sections show how these pixels are stored in display memory.
To store one bit pixels, eight pixels are grouped into one byte of display memory as shown below:
When these pixels are shown, Pixel 0 is seen to be left of Pixel 1, Pixel 1 is seen to be left of Pixel 2, and so on. One bit
pixels are only available on monochrome panels, and can only be displayed in black-and-white (no Look-Up Table is used).
To store two bit pixels, four pixels are grouped into one byte of display memory as shown below:
When these pixels are shown, Pixel 0 is seen to be left of Pixel 1, Pixel 1 is seen to be left of Pixel 2, and so on. Two bit
pixels are available in both monochrome and color panels.
Bit 6
Pixel 1
Bit 0
Bit 6
Pixel 0
Bit 0
Table 3-1: Number Of Bits As Related To Colors
Figure 2: Pixel Storage For 2 Bits (4 Colors/Gray Shades) In One Byte Of Display Memory
Bits per
Figure 1: Pixel Storage For 1 Bit (Black-and-White) In One Byte Of Display Memory
Pixel
1
2
4
8
Bit 5
Pixel 2
Bit 0
Bit 5
Pixel 1
Bit 1
Gray Shades
n/a
16
2
4
Levels of
Bit 4
Pixel 3
Bit 0
Bit 4
Pixel 1
Bit 0
Colors
256
n/a
16
4
Bit 3
Pixel 4
Bit 0
Bit 3
Pixel 2
Bit 1
Bit 2
Pixel 5
Bit 0
Bit 2
Pixel 2
Bit 0
Epson Research and Development
Bit 1
Pixel 6
Bit 0
Bit 1
Pixel 3
Bit 1
Programming Notes and Examples
Vancouver Design Center
Bit 0
Pixel 7
Bit 0
Bit 0
Pixel 3
Bit 0
Issue Date: 01/01/30