S1D13700F02 Epson Electronics America, Inc., S1D13700F02 Datasheet - Page 89

• Manufacturer Part Number: S1D13700F02
• Description: Embedded Memory Graphics Lcd Controller
• Manufacturer: Epson Electronics America, Inc.

Epson Research and Development
Vancouver Design Center
12.5 Scrolling
12.5.1 On-Page Scrolling
Hardware Functional Specification
Issue Date: 2005/11/29
Before scrolling
Where:
After scrolling
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)
The microprocessor can control S1D13700F02 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.
The normal method of scrolling within a page is to move the whole display up one line and
erase the bottom line. However, the S1D13700F02 does not automatically erase the bottom
line, so it must be erased with blanking data when changing the scroll address register.
ABC
WXYZ
WXYZ
Figure 12-14 On-Page Scrolling
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789
Blank
Revision 1.01
SAD1
SAD3
SAD1
WXYZ
ABC
WXYZ
Display memory
C/R
AP
789
789
Blank
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