RA8806 Ver la hoja de datos (PDF) - RAIO
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RA8806 Datasheet PDF : 174 Pages
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Preliminary Version 1.0
RA8806
Two Layers Character/Graphic LCD Controller
REG [70h] Cursor Position Y Register (CURY)
Bit
Description
Cursor Position of Common / RAM0 Address[8:5]
Define the cursor address of common, a value from 0h ~ EFh(0 ~ 239
7-0 in decimal).
When CGRAM write mode is selected (REG[12h] Bit[1:0] = 00b), the
Bit[3:0] is indicate which font will be created. And Bit[7:4] are not
available.
Default
00h
Access
R/W
REG [71h] Scrolling Action Range Begin Common Register (BGCM)
Bit
Description
Common Start Position of Scrolling Mode
REG[71h] defines the begin position(top boundary) of scroll window, it
7-0 must be a value that less or equal to the REG[72h], which defines the
end position(bottom boundary) of scroll window. Also it must be less
then the value of EFh (239 in decimal), for the Display Data RAM limit.
Default
00h
Access
R/W
REG [72h] Scrolling Action Range END Common Register (EDCM)
Bit
Description
Common Ending Position of Scrolling Mode
REG[72h] defines the end position(bottom boundary) of scroll window,
7-0
it must be a value that larger or equal to the REG[71h], which defines
the end position(top boundary) of scroll window. Also it must be less
or equal then the value of EFh (239 in decimal), for the Display Data
RAM limit.
Default
00h
Access
R/W
REG [80h] Blink Time Register (BTMR)
Bit
Description
Cursor Blink Time and Scroll Time
Default Access
Blinking Time = Bit[7:0] x (Frame width)
7-0
Frame width = 1/Frame Rate
00h
R/W
The Frame Rate is depends on the DWWR and DWHR and ITCR
setting.
Notes:
1. The Setting also determines the scroll moving speed.
2. The Frame width is the time that the controller scan whole panel, it depends on the system clock
frequency, setting of display window, driver interface (4-bits/8-bits), Idle time (ITCR), and dual mode or
gray scale mode, etc.
RAiO TECHNOLOGY INC.
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www.raio.com.tw
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