參數(shù)資料
型號(hào): S1D13700
廠商: 愛普生(中國)有限公司
英文描述: Embedded Memory Graphics LCD Controller
中文描述: 嵌入式內(nèi)存圖形液晶顯示控制器
文件頁數(shù): 92/134頁
文件大?。?/td> 1000K
代理商: S1D13700
Page 92
Epson Research and Development
Vancouver Design Center
S1D13700
X42A-A-001-00
Hardware Functional Specification
Issue Date: 2004/01/06
Revision 1.0
12.5 Scrolling
The microprocessor can control S1D13700 scrolling modes by writing the scroll address
registers for each screen block, REG[0Bh] - REG[14h]. This is referred to as address
scrolling and can be used for both text and graphic screen blocks, if the display memory
capacity is greater than one screen.
12.5.1 On-Page Scrolling
The normal method of scrolling within a page is to move the whole display up one line and
erase the bottom line. However, the S1D13700 does not automatically erase the bottom
line, so it must be erased with blanking data when changing the scroll address register.
Figure 12-14 On-Page Scrolling
ABC
WXYZ
789
WXYZ
789
ABC
WXYZ
789
WXYZ
789
Display memory
AP
C/R
Before scrolling
After scrolling
Blank
Blank
SAD1
SAD3
SAD1
Where:
SADx = start address of screen block x
AP = horizontal address range (REG[06h] bits 7-0, REG[07h] bits 7-0)
C/R = character bytes per row (REG[03h] bits 7-0)
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