S1D13700F01 Epson Electronics America, Inc., S1D13700F01 Datasheet - Page 90

• Manufacturer Part Number: S1D13700F01
• Description: Embedded Memory Graphics Lcd Controller
• Manufacturer: Epson Electronics America, Inc.

Page 90
12.5 Scrolling
12.5.1 On-Page Scrolling
S1D13700F01
X42A-A-002-04
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 S1D13700F01 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 S1D13700F01 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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Revision 4.05
SAD1
SAD3
SAD1
WXYZ
ABC
WXYZ
Display memory
C/R
AP
Epson Research and Development
Hardware Functional Specification
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Vancouver Design Center
Issue Date: 2005/12/13
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