參數(shù)資料
型號: HD66728
廠商: Hitachi,Ltd.
英文描述: 112 x 80-dot Graphics LCD Controller/Driver(112 x 80點圖形LCD控制器)
中文描述: 112 × 80點圖形LCD控制器/驅(qū)動器(112 × 80點圖形液晶顯示控制器)
文件頁數(shù): 48/138頁
文件大?。?/td> 2158K
代理商: HD66728
HD66728
48
Vertical Scroll Control 1/2
SN3-0:
Set SN2 to SN0 bits when SW = 0. Set the SN3 bit when SW = 1. Specify the display start line
output from COM1. Because the DDRAM is assigned a 10-line display area, the data is displayed
sequentially from the first line to the 10th line then repeated from the first line again. In partial smooth
scrolling, these bits specify the display start line for the next line of the fixed-display line. For details, see
the Partial Smooth Scroll Display Function section.
SL2–0:
Select the top raster-row to be displayed (display-start raster-row) in the display-start line specified
by SN2 to SN0. Any raster-row from the first to eighth can be selected (table 19). This function is used to
achieve vertical smooth scrolling together with SN2 to SN0. For details, see the Vertical Smooth Scroll
section.
R/W RS DB7
DB0
DB6 DB5 DB4 DB3 DB2 DB1
0
0
0
1
0
0
1
SN1 SN0
<0> SN3
SL1 SL0
PS1 PS0
(SW = 0)
(SW = 1)
SN2
<0>
SL2
<0>
0
0
0
1
0
1
0
(SW = 0)
(SW = 1)
Figure 20 Vertical Scroll Control 1/2 Instruction
Table 18
SN Bits and Display-start Lines
SN3
SN2
SN1
SN0
Display-start Line
0
0
0
0
1st line
0
0
0
1
2nd line
0
0
1
0
3rd line
0
0
1
1
4th line
0
1
0
0
5th line
0
1
0
1
6th line
0
1
1
0
7th line
0
1
1
1
8th line
1
0
0
0
9th line
1
0
0
1
10th line
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