參數(shù)資料
型號: HD66710A00TF
廠商: Hitachi,Ltd.
英文描述: (Dot Matrix Liquid Crystal Display Controller/Driver)
中文描述: (點陣式液晶顯示控制器/驅(qū)動器)
文件頁數(shù): 60/73頁
文件大?。?/td> 507K
代理商: HD66710A00TF
HD66710
350
Horizontal Dot Scroll
Dot unit shifts are performed by setting the horizontal dot scroll bit (HDS) when the extension register is
enabled (RE = 1). By combining this with character unit display shift instructions, smooth horizontal
scrolling can be performed on a 6-dot font width display as shown below.
No shift performed
Shift to the left by one dot
5-dot font width (FW = 0)
Shift to the left by two dots
Shift to the left by three dots
Shift to the left by four dots
6-dot font width (FW = 1)
No shift performed
Shift to the left by one dot
Shift to the left by two dots
Shift to the left by three dots
Shift to the left by four dots
Shift to the left by five dots
Figure 27 Shift in 5- and 6-Dot Font Width
DB7DB6DB5 DB4DB3 DB2DB1DB0
RS R/W
0
0
0
0
1
DL
N
1
*
*
Enable the extension register
1
0
0
0
0
0
1
1
*
*
Shift the whole display to the left by one character
CPU Wait
0
0
1
0
0
1
*
*
*
*
Shift the whole display to the left by one dot
0
0
1
0
1
0
*
*
*
*
Shift the whole display to the left by two dots
0
0
1
0
1
1
*
*
*
*
Shift the whole display to the left by three dots
0
0
1
1
0
*
*
*
*
Shift the whole display to the left by four dots
CPU Wait
CPU Wait
CPU Wait
0
0
1
0
0
*
*
*
*
Perform no shift
CPU Wait
8
2
3
4
5
7
(1) Method of smooth scroll to the left
0
0
1
1
0
1
*
*
*
*
Shift the whole display to the left by five dots
CPU Wait
6
Notes: 1.
2.
*
1
*
2
0
0
When the font width is five (FW = 0), this step is skipped.
The extended register enable bit (RE) is cleared.
0
Figure 28 Smooth Scroll to the Left
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