ra8803 RAIO Technology Inc., ra8803 Datasheet - Page 39

• Manufacturer Part Number: ra8803
• Description: Two Layers Character/graphic Lcd Controller Specification
• Manufacturer: RAIO Technology Inc.

Version 2.5
RAiO
7-7 Two Layer Display
TECHNOLOGY INC.
For RA8822, if LCD resolution is 240x160 pixel then the display window size is 240x160. We can create
an active window in the display window like Figure 7-10. This figure show the display size is 240x160,
and a 120x120 active window is on the upper-left.
The RA8803/8822 embedded two DDRAM for two layers display. The Register MAMR is used to show
the visible display for page1(layer1) and page2(layer2). It provide six display modes:
Please refer Figure 7-11 and Register description of MAMR Bit[6..4] and Bit[3..2].
119
120
159
1. Display Page1
2. Display Page2
3. Display Page1 OR Page2
4. Display Page1 XOR Page2
5. Display Page1 NOR Page2
6. Display Page1 AND Page2
0
1
2
:
:
:
:
:
:
:
:
:
:
Figure 7-10: RA8822 Display Window and Active window
0 1 2 ………………………. 119 120 ……………………… 239
Active Window
120 x 120
240
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Two Layers Character/Graphical LCD Controller
Display Window
240 x 160
RA8803/8822
160
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