ra8806 RAIO Technology Inc., ra8806 Datasheet - Page 19

• Manufacturer Part Number: ra8806
• Description: Two Layers Character/graphic Lcd Controller
• Manufacturer: RAIO Technology Inc.

Preliminary Version 1.2
RAiO
REG [40h] Active Window Left Register (AWLR)
REG [50h] Active Window Top Register (AWTR)
REG [60h] Cursor Position X Register (CURX)
REG [61h] Begin Segment Position Register of Scrolling (BGSG)
Note:
REG[61h, 62h, 71h, 72h] dominate a named scroll window for scroll function. They must be set before the
scroll function is enable.
REG [62h] End Segment Position Register of Scrolling (EDSG)
TECHNOLOGY INC.
7-6
5-0
7-0
7-6
5-0
7-6
5-0
7-6
5-0
Bit
Bit
Bit
Bit
Bit
Reserved
Active Window Left Position
Note: AWLR must be equal or less then AWRR, and less then the
value 27h(39 in decimal)
Active Window Top Position
Note: AWTR must be equal or less then AWBR, and less then the
value EFh (239 in decimal)
Reserved
Cursor Position of Segment / RAM0 Address[4:0]
Define the cursor address of segment, a value from 0h ~ 27h(0 ~ 40 in
decimal)
When CGRAM write mode is selected (REG[12h] Bit[1:0] = 00b), the
Bit[4:0] is the address for writing bit-map data. When create a full-size
font, normally set to 0. When create an odd half-size font, normally set
to 0, and set 10h for even font.
Reserved
Segment Start Position of Scrolling Mode
REG[61h] defines the start position (left boundary) of scroll window, it
must be a value that less or equal to the REG[62h], which defines the
end position(right boundary) of scroll window. Also it must be less
then the value of 27h (40 in decimal), for the Display Data RAM limit.
Reserved
Segment End Position of Scrolling Mode
REG[62h] defines the end position(right boundary) of scroll window, it
must be a value that larger or equal to the REG[61h], which defines
the end position(left boundary) of scroll window. Also it must be less
or equal then the value of 27h(40 in decimal), for
limit.
Description
Description
Description
Description
Description
Segment-Left
Common-Top
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Two Layers Character/Graphic LCD Controller
the Display Data RAM
www.raio.com.tw
Default
Default
Default
Default
Default
00h
00h
00h
00h
00h
00
00
00
00
RA8806
Access
Access
Access
Access
Access
R/W
R/W
R/W
R/W
R/W
R
R
R
R