RA8816
Preliminary Version 1.6
144x65 Character/Graphic LCD Driver
IRS: Select the resistors for the V0 voltage level adjustment. 1 Î Use the internal resistors. 0 Î Do not
use the internal resistors. The V0 voltage level is regulated by an external resistive voltage divider
that is attached to the VR signal.
HD[1..0]: Setup the LCD driving current. Normally big panel use bigger driving current to void bad display
quality.
Table 5-17
Driving Current
HD1 HD0
0
0
1
1
0
1
0
1
Min.
Max.
[13h] Blink Timer Register (BLTR)
RW
0
DB7
DB6
DB5
--
DB4
INV
DB3
DB2
BLT2
DB1
DB0
BLK_EN PBK_EN
BLT3
BLT1
BLT0
BLK_EN: Blinking. 0 Î Blinking off. 1 Î Blinking on.
PBK_EN: Whole or Partial Blinking selection. 0 Î Whole screen Blinking. 1 Î Partial screen Blinking. The
blinking area is depending on the scroll window. That means the partial area is setting by register
SWSXR, SWSYR, SWRXR and SWRYR. When the Partial Blinking off, the above four registers had
better clear to 0. Note, only BLK_EN set to “1” when blink is active.
INV: Setup display reverse. 0 Î Normal display. 1 Î Display reverse. The reverse area is depend on the
Bit7(PINV) of register SWRYR.
BLT[3..0]: Setup blinking time.
Table 5-18
Blink Time
BLT3
BLT2
BLT1
BLT0
(Unit: Frames)
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
8
16
24
32
40
48
56
64
72
80
88
96
104
112
120
128
RAiO TECHNOLOGY INC.
22/68
www.raio.com.tw
RAIO [ RAIO TECHNOLOGY INC. ]
