RA8835A
Version 1.0
Dot Matrix LCD Controller
6-2-1-11 C/R
Set the length, including horizontal blanking, of one line. The line length is equal to TC/R + 1,
where TC/ R can range from 0 to 255. TC/R must be greater than or equal to C/R + 4. Provided
this condition is satisfied, [TC/R] can be set according to the equation given in section 17-1-1 in
order to hold the frame period constant and minimize jitter for any given main oscillator frequency,
fOSC
.
Table-6: Line Length Selection
TC/R
HEX D7 D6 D5 D4 D3 D2 D1 D0
[TC/R] line length (bytes)
00
01
↓
0
0
↓
0
↓
1
1
0
0
↓
1
↓
1
1
0
0
↓
0
↓
1
1
0
0
↓
1
↓
1
1
0
0
↓
0
↓
1
1
0
0
↓
0
↓
1
1
0
0
↓
1
↓
1
1
0
1
↓
0
↓
0
1
1
2
↓
52
↓
FE
FF
83
↓
255
256
6-2-1-12 L/F
Set the height, in lines, of a frame. The height in lines is equal to L/F + 1, where L/F can range
from 0 to 255.
Table-7: Frame Height Selection
L/F
[L/F] lines per frame
HEX D7 D6 D5 D4 D3 D2 D1 D0
00
01
↓
7F
↓
0
0
↓
0
↓
1
1
0
0
↓
1
↓
1
1
0
0
↓
1
↓
1
1
0
0
↓
1
↓
1
1
0
0
↓
1
↓
1
1
0
0
↓
1
↓
1
1
0
0
↓
1
↓
1
1
0
1
↓
1
↓
0
1
1
2
↓
128
↓
FE
FF
255
256
If W/S is set to 1, selecting two-screen display, the number of lines must be even and L/F must,
therefore, be an odd number.
RAiO TECHNOLOGY INC.
www.raio.com.tw
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RAIO [ RAIO TECHNOLOGY INC. ]
