ra8803 RAIO Technology Inc., ra8803 Datasheet - Page 16

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

Version 2.5
RAiO
REG [12h] Memory Access Mode Register (MAMR)
TECHNOLOGY INC.
6-4
3-2
1-0
Bit
7
In Graphic Mode, Cursor Auto Shifting Direction
1 : Horizontal moving first then Vertical.
0 : Vertical moving first then Horizontal.
Display Layer Selection
0 0 1 : Only Show Page1
0 1 0 : Only Show Page2
0 1 1 : Show Two Layer Mode. The display rule depends on Bit3 and
0 0 0 : Gray Mode. In this mode, each pixel gray of LCD depends on
1 1 1：Extension Mode(2), the panel will show both Page1 and
MPU Read/Write Layer Selection
0 0 : Access Page0 (512B SRAM) Display Data RAM.
0 1 : Access Page1 (9.6KB SRAM) Display Data RAM.
1 0 : Access Page2 (9.6KB SRAM) Display Data RAM.
1 1 : Access Page1 and Page2 Display Data RAM at the same time.
The Page0 are used for create some temporary characters. Please
refer to AP Note for more details.
1 1 0：Extension Mode(1), the panel will show both Page1 and
Two Layer Mode Selection
0 0 : Page1 RAM “OR” Page2 RAM
0 1 : Page1 RAM “XOR” Page2 RAM
1 0 : Page1 RAM “NOR” Page2 RAM
1 1 : Page1 RAM “AND” Page2 RAM
Please refer to Figure 7-10 for more explanation.
Bit2 as following.
the value of Page1 & Page2.
Page2. The RA8803 is available for 640x240 dots panel, and
RA8822 for 480x160 dots panel.
Page2. The RA8803 is available for 320x480 dots panel, and
RA8822 for 240x320 dots panel.
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Page1 Page2
0
1
0
1
0
0
1
1
Description
Level1
Level2
Level3
Level4
Gray
16/48
Two Layers Character/Graphical LCD Controller
RA8803/8822
Default
www.raio.com.tw
1h
1h
0h
1h
Access
R/W
R/W
R/W
R/W