ra8802 RAIO Technology Inc., ra8802 Datasheet - Page 29

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

Version 1.3
RAiO
7.7 Cursor
7.7.1 Cursor Position and Shift
7.7.2 Cursor Display and Blinking
TECHNOLOGY INC.
The moving unit for segment of cursor is one byte(or one pixel). But the moving unit for common is pixel. For
example, if user want to show “制” at third location of upper-left, then the Register value are CPXR = 04h, CPYR =
00h. If user want to show “器” at first position of second line, the register value are CPXR = 00h，CPYR = 10h.
Please refer to Figure 7-9.
The cursor position is controlled by Register CPXR and CPYR for both text and graphics mode. You can also
setup the Auto-Increase mode for write to DDRAM or read data DDRAM. The boundary depends on active window.
The user could control cursor On/Off or Blinking. The register [80h] BTR is used to set up the blinking
time.
EFh
10h
20h
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Blinking Time = BTR[80h] Bit[7..0] x (1/Frame_Rate)
00 01
Figure 7-9 : Example of RA8802 Cursor Position
02 03
320(Segment) x 240(Common)
04 05
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Character/Graphic LCD Controller
RA8802/8820
www.raio.com.tw