SED1330F Datasheet, PDF (138/148 Pages) List of Unclassifed Manufacturers – LCD Controller ICs

9.0 Application Notes
9.5.2.1 – 9.5.3.2
SAD1
AB
SAD2
+
Half-tone
AB
1st layer
2nd layer
Combined layer display
Figure 89. Half-tone character and graphics
9.5.2.2 Graph Display
To present two overlaid graphs on the screen, config-
ure the display as for the menu bar display and put one
graph on each screen layer. The difference in contrast
between the half- and full-intensity displays will make
it easy to distinguish between the two graphs and help
create an attractive display.
1. OVLAY: P1 = 00H
2. DISP ON/OFF: P1 = 34H
9.5.3 Flashing Areas
9.5.3.1 Small Area
To flash selected characters, the MPU can alternately
write the characters as character codes and blank
characters at intervals of 0.5 to 1.0 seconds.
9.5.3.2 Large Area
Divide both layer 1 and layer 2 into two screen blocks
each, layer 2 being divided into the area to be flashed
and the remainder of the screen. Flash the layer 2
screen block at 2 Hz for the area to be flashed and
combine the layers using the OR function.
ABC
ABC
XYZ
XYZ
Figure 90. Localized flashing
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