RA8835A
Version 1.0
Dot Matrix LCD Controller
Layer 1
Layer 2
Layer 3
Visible display
OR
ABCDE
1
2
3
4
ABCDE
ABCDE
CDE
Exclusive OR
ABCDE
ABCDE
ABCDE
AND
ABCDE
Prioritized OR
Figure 6-18: Combined Layer Display
Notes:
L1: Not flashing
L2: Flashing at 1 Hz
L3: Flashing at 2 Hz
6-3-5-2 DM1, DM2
DM1 and DM2 specify the display mode of screen blocks 1 and 3, respectively.
DM1/2 = 0: Text mode
DM1/2 = 1: Graphics mode
Note 1: Screen blocks 2 and 4 can only display graphics.
Note 2: DM1 and DM2 must be the same, regardless of the setting of W/S.
6-3-5-3 OV
Specifies two- or three-layer composition in graphics mode.
OV = 0: Two-layer composition
OV = 1: Three-layer composition
Set OV to 0 for mixed text and graphics mode.
6-3-6 CGRAM ADR
Specifies the CG RAM start address.
MSB
LSB
C
0
1
0
1
1
1
0
0
P1
P2
A7
A6
A5
A4
A3
A2
A1
A9
A0
A8
SAGL
SAGH
A15
A14
A13
A12
A11
A10
Figure 6-19: CGRAM ADR Parameters
Note: See section 10 for information on the SAG parameters.
RAiO TECHNOLOGY INC.
www.raio.com.tw
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