參數(shù)資料
型號(hào): HD64646
廠商: Hitachi,Ltd.
英文描述: LCTC (LCD Timing Controller)
中文描述: LCTC(LCD定時(shí)控制器)
文件頁(yè)數(shù): 22/50頁(yè)
文件大小: 156K
代理商: HD64646
HD64645/64646
22
Horizontal Virtual Screen Width
Horizontal virtual screen width can be specified by the character in addition to the number of horizontal
displayed characters (Figure 12).
The display screen can be scrolled in any direction by the character, by setting the horizontal virtual screen
width and updating the start address. This function is enabled by programming the horizontal virtual screen
width register (R18).
Figure 13 shows an example.
M
D
7
VRAM
1st line
2nd line
M
D
0
M
D
15
ARAM
M
D
8
Display screen
VRAM
8-bit
ARAM
8-bit
FF
33
55
1st
line
2nd
line
00
CC
AA
Figure 11 Relation between Graphic Screen and Memory Contents
Display
screen
Horizontal
displayed
characters (R1)
Horizontal virtual screen width (R18)
Figure 12 Horizontal Virtual Screen Width
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