SED1330F Datasheet, PDF (93/148 Pages) List of Unclassifed Manufacturers – LCD Controller ICs

5.5.4 – 5.5.5
5.5.4 Bidirectional Scrolling
Bidirectional scrolling can be performed only if the
display memory is larger than the physical screen
both horizontally and vertically. Although scrolling is
normally done in single-character units, the HDOT
5.0 Display Control Functions
SCR command can be used to scroll horizontally in
pixel units. Single-pixel scrolling both horizontally and
vertically can be performed by using the SCROLL and
HDOT SCR commands. See Section 9.4
BC
Before scrolling
EFG
TUV
12
Display memory
AP
A BC
EFG
TUV
12 34
567
C/R
89
After scrolling
FG
TUV
1234
56
ABC
E FG
TUV
1234
56 7
89
Figure 63. Bidirectional scrolling
5.5.5 Scroll Units
Table 21. Scroll units
Mode
Vertical
Horizontal
Text
Characters
Pixels or
characters
Graphics
Pixels
Pixels
Note that in a divided screen, each block cannot be indepen-
dently scrolled horizontally in pixel units.
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