SED1330F Datasheet, PDF (43/148 Pages) List of Unclassifed Manufacturers – LCD Controller ICs

3.3.3.3 – 3.3.5.1
3.3.3.3 CM
Sets the cursor display mode. Always set CM to 1
when in graphics mode.
CM = 0: Underline cursor
CM = 1: Block cursor
3.3.4 CSRDIR
Sets the direction of automatic cursor increment. The
cursor can move left or right one character, or up or
down by the number of bytes specified by the address
pitch, AP.
When reading from and writing to display memory,
this automatic cursor increment controls the display
memory address increment on each read or write.
MSB
LSB
C 0 1 0 0 1 1 CD1 CD2
3.0 Command Description
Table 18. Cursor shift direction
C
CD1 CD0
Shift direction
4CH
0
0
Right
4DH
0
1
Left
4EH
1
0
Up
4FH
1
1
Down
Note: Since the cursor moves in address units even if FX ≥ 9,
the cursor address increment must be preset for move-
ment in character units. See Section 5.3.
3.3.5 OVLAY
Selects layered screen composition and screen text/
graphics mode.
MSB
LSB
C0 10 1 1 0 11
P1 0 0 0 OV DM2 DM1 MX1 MX0
Figure 21. CSRDIR parameters
Figure 23. OVLAY parameter
–1
01
10
–AP
+1
00
+AP
11
3.3.5.1 MX0, MX1
MX0 and MX1 set the layered screen composition
method, which can be either OR, AND, Exclusive-OR
or Priority-OR. Since the screen composition is orga-
nized in layers and not by screen blocks, when using
a layer divided into two screen blocks, different com-
position methods cannot be specified for the indi-
vidual screen blocks.
The Priority-OR mode is the same as the OR mode
unless flashing of individual screens is used.
Figure 22. Cursor direction
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