參數(shù)資料
型號: S1D13700F02A100
元件分類: 顯示控制器
英文描述: 320 X 240 PIXELS CRT OR FLAT PNL GRPH DSPL CTLR, PQFP64
封裝: LEAD FREE, TQFP-64
文件頁數(shù): 60/108頁
文件大?。?/td> 1373K
代理商: S1D13700F02A100
4: FUNCTION DESCRIPTION
50
EPSON
S1D13700 Technical Manual
4.1.3
Screen Configuration
(1) Screen conguration
The basic screen conguration of the S1D13700 consists of a text or graphics screen and an overlapping
graphics screen. The graphics screen uses at least eight times as much display memory as the text screen.
Figure 4-4 schematically shows the relationship between the virtual and physical screens.
Figure 4-4 Relationship between virtual and physical screens
(2) Display address incrementation
The S1D13700 sequentially increments the display address in the X direction from the screen origin
(home position) in the same way as a raster scan CRT. When the display address is incremented until the
number of addresses equals C/R, one line of data is read from display memory. Next, to read the second
line of data when in graphics mode, the S1D13700 starts from the address incremented by the distance
equal to the address pitch (AP) from the address of the screen origin (SAD), then repeats the same
operation as described above for the rst line.
Conversely, in text mode the S1D13700 repeats the same operation as described above for the rst line
until the display address for one character is completed. (Character code is read from the same area, and
data is read out in order of R0–R15 of the character generator.) (See Figure 4-2 “Example of character
A/P
C/R
0000H
Character
table
Graphics
table
07FFH
47FFH
0800H
(XW, YM)
(XM, YM)
(0, YM)
(X, Y)
(0, 0)
(XM, 0)
X
Y
Display
screen
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