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): 79/108頁
文件大?。?/td> 1373K
代理商: S1D13700F02A100
4: FUNCTION DESCRIPTION
S1D13700 Technical Manual
EPSON
67
(6) Dotwise scrolling in the X direction (HDOT SCR)
Figure 4-10 shows the relationship between commands and display when a display pattern is smoothly
scrolled to the left. In this case, the screen (window) moves to the right on a virtual screen. Therefore, the
MPU only needs to sequentially increment the value of the HDOT SCR command parameter (number of
dots to be shifted) without modifying the display start address (SAD) in the S1D13700 to shift display
leftward one dot at a time. Then when display has been dot-shifted a distance equal to the character eld,
the MPU should reset the value of the HDOT SCR command parameter to 00H and simultaneously
increment SAD by one address. Thus, smooth scrolling in the X direction is possible by performing this
series of operations at appropriate time intervals.
To scroll the display pattern to the right, change the display dot address by reversing the order above.
Should the window reach either edge of the virtual screen, use the MPU to manage the screen. Note that
when smooth scrolling continues, the screen is not affected.
Also note that when scrolling display dotwise in the X direction using the HDOT SCR command, scrolling
cannot be controlled separately in each layer because all layers are scrolled at the same time.
Figure 4-10 Example of using HDOT SCR ([FX] = 8)
Note: Because the speed at which the LCD responds to instructions varies with temperature,
smooth scrolling at low temperatures in particular may not easily be recognized.
HDOT SCR
parameter value
P1 = 00H
P1 = 01H
P1 = 02H
P1 = 03H
P1 = 07H
P1 = 00H
Off the screen
Screen
SAD = SAD
Enlarged view
SAD
SAD+1 SAD+2
SAD = SAD + 1
AP
C/R
Screen
Virtual screen
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