ra8835a RAIO Technology Inc., ra8835a Datasheet - Page 73

• Manufacturer Part Number: ra8835a
• Description: Dot Matrix Lcd Controller
• Manufacturer: RAIO Technology Inc.

RAiO TECHNOLOGY INC.
Version 1.0
8-5-2 Half-tone Display
8-5-3 Flashing Area
The FP parameter can be used to generate half-intensity display by flashing the display at 17 Hz.
Note that this mode of operation may cause flicker problems with certain LCD panels.
8-5-2-1 Menu pad display
8-5-2-2 Graph display
To present two overlaid graphs on the screen, configure 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.
8-5-3-1 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.
8-5-3-1 Large area
Divide 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.
1. OVLAY: P1 = 00H
2. DISP ON/OFF: P1 = 34H
1. OVLAY: P1 = 00H
2. DISP ON/OFF: P1 = 34H
SAD1
AB
1st layer
ABC
Figure 8-9: Half-tone Character and Graphics
Figure 8-10: Localized Flashing
+
XYZ
SAD2
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2nd layer
ABC
C
AB
ombined layer display
XYZ
Dot Matrix LCD Controller
Half-tone
RA8835A
www.raio.com.tw