HD66773R Datasheet, PDF (75/133 Pages) Renesas Technology Corp – 262,144-color, 132 x 176-dot Graphics Controller Driver for TFT LCD panels

HD66773R
Graphics Operation Processing
1. Write mode 1: AM = 0, LG2–0 = 000
This mode is used when data are horizontally written in high-speed mode. It is also used to initialize the
graphics RAM (GRAM) or to draw a line horizontally. The write-data mask function (WM15–0) is also
available in these operations. After writing, the address counter (AC) automatically increments by 1 (I/D =
1) or decrements by 1 (I/D = 0), and jumps to the counter at the opposing edge of the next one-raster-row
below after when the counter reaches either left or right edge of GRAM.
Operation Examples:
1) I/D = "1", AM = "0", LG2-0 = "000"
2) WM15-0 = "07FF"H
3) AC = "0000"H
WM15
Write-data mask:
0 00 00 11 1
WM0
1 1 1 1 1 1 1 1 ^{*Write mask <G> and <B> plains}
Write data (1):
DB17
DB10 DB8
DB1
10 0 11 11 1 1 00 10 10 0
Write data (2):
11 0 00 00 0 0 01 10 00 0
"0000"H
1 00 11* _{* ** * * * * * * *}
Write data (1)
"0001"H
"0002"H
11 000* _{* * * * ** * * * *}
Write data (2)
Note : The data in the bit with "*" are not
GRAM
overwritten.
Rev.1.10, Jun.21.2003, page 75 of 133