ra8802 RAIO Technology Inc., ra8802 Datasheet - Page 30

• Manufacturer Part Number: ra8802
• Description: Character/graphic Lcd Controller
• Manufacturer: RAIO Technology Inc.

Version 1.3
RAiO
7.8 Display Window and Active Window
7.7.3 Cursor Width and Height
TECHNOLOGY INC.
The cursor height is controlled by register CSCR Bit[7..4] from 1~16pixel. It does depend on user’s
requirement.
In text mode, RA8802/8820 provide two widths for selection. If Register CCR bit0 -- CSD = 0, the
cursor width fixed to one byte(8 pixel). If CSD =1, the cursor width is depend on the character. If user
sends a full size Chinese character, then the cursor width will become 2byte width(16 pixel). If user
shows a half size character then the cursor width will change to one byte(8 pixel).
The RA8802/8820 provides two windows for real application -- Display Window and Active Window.
The Display Window is the actual size of LCD panel. Active is a sub-window in Display Window. The
boundary of cursor shift depends on the active window.
For RA8802, if LCD panel is 320x240 pixel then the display window size is 320x240. We can create an
active window in the display window like Figure 7-11. This figure show the display size is 320x240, and
a 160x160 active window is on the upper-middle.
1 Pixel
2 Pixel
Figure 7-10 : Cursor Height
3 Pixel
30/30
16 Pixel
Character/Graphic LCD Controller
RA8802/8820
www.raio.com.tw