HD66773R Datasheet, PDF (76/133 Pages) Renesas Technology Corp – 262,144-color, 132 x 176-dot Graphics Controller Driver for TFT LCD panels

HD66773R
2. Write mode 2: AM = 1, LG2–0 = 000
This mode is used when data are vertically written in high-speed mode. It is also used to initialize the
graphics RAM (GRAM), develop font patterns or draw a line vertically. The write-data mask function
(WM15–0) is also available in these operations. After writing, the address counter (AC) automatically
increments by 256, and automatically jumps to the counter either at the top of the next right row (ID = 1) or
the next left row (I/D = 0) according to the setting in the I/D bit, when the address reaches the bottom of
GRAM.
1) I/D = "1", AM = "1", LG2-0 = "000"
2) WM15-0 = "07FF"H
3) AC = "0000"H
Write-data mask:
Write data (1):
Write data (2):
Write data (3):
WM15
WM0
0 00 00 111 1 11 11 11 1
DB17
DB10 DB8
DB1
10 0 11 111 1 00 10 10 0
11 0 00 000 0 01 10 00 0
01 1 11 100 0 10 00 00 1
"0000"H
"0100"H
"0200"H
1 0 0 1 1 * * * * * * * * * * * Write data (1)
1 1 0 0 0 _{* * * * * * * * * * * Write data (2)}
0 1 1 1 1 _{* * * * * * * * * * *} Write data (3)
GRAM
Note 1) The data in the bit with "*" are not overwritten.
Note 2) When data are written to the address "AF00"H, the Address Counter
(AC) jumps to "0001"H.
Rev.1.10, Jun.21.2003, page 76 of 133