Datasheet
1063
SAM9M10 [DATASHEET]
6355F–ATARM–12-Mar-13
connected to the upper panel data lines and the bus LCDD[15:8] is connected to the lower panel data lines. The
rest of the LCD Data Bus lines (LCDD[23:16]) are not used.
STN Mono displays require one bit of image data per pixel. STN Color displays require three bits (Red, Green and
Blue) of image data per pixel, resulting in a horizontal shift register of length three times the number of pixels per
horizontal line. This RGB or Monochrome data is shifted to the LCD driver as consecutive bits via the parallel data
lines.
A TFT single scan display uses up to 24 parallel data lines to shift data to successive horizontal lines one at a time
until the entire frame has been shifted and transferred. The 24 data lines are divided in three bytes that define the
color shade of each color component of each pixel. The LCDD bus is split as LCDD[23:16] for the blue component,
LCDD[15:8] for the green component and LCDD[7:0] for the red component. If the LCD Module has lower color
resolution (fewer bits per color component), only the most significant bits of each component are used.
All these interfaces are shown in Figure 45-8 to Figure 45-12. Figure 45-8 on page 1063 shows the 24-bit single
scan TFT display timing; Figure 45-9 on page 1063 shows the 4-bit single scan STN display timing for mono-
chrome and color modes; Figure 45-10 on page 1064 shows the 8-bit single scan STN display timing for
monochrome and color modes; Figure 45-11 on page 1065 shows the 8-bit Dual Scan STN display timing for
monochrome and color modes; Figure 45-12 on page 1066 shows the 16-bit Dual Scan STN display timing for
monochrome and color modes.
Figure 45-8. TFT Timing (First Line Expanded View)
Figure 45-9. Single Scan Monochrome and Color 4-bit Panel Timing (First Line Expanded View)
LCDVSYNC
LCDDEN
LCDHSYNC
LCDDOTCK
LCDD [24:16]
LCDD [15:8]
LCDD [7:0]
G0
B0
R0
G1
B1
R1
LCDVSYNC
LCDDEN
LCDHSYNC
LCDDOTCK
LCDD [3]
LCDD [2]
LCDD [1]
LCDD [0]
P1
P0
P2
P3
P5
P4
P6
P7
LCDVSYNC
LCDDEN
LCDHSYNC
LCDDOTCK
LCDD [3]
LCDD [2]
LCDD [1]
LCDD [0]
G0
R0
B0
R1
B1
G1
R2
G2