SED1330F Datasheet, PDF (34/148 Pages) List of Unclassifed Manufacturers – LCD Controller ICs

3.0 Command Description
3.2.1.12 – 3.2.1.13
3.2.1.12 C/R
Sets the address range covered by one display line,
that is, the number of characters less one, multiplied
by the number of horizontal bytes per character.
C/R can range from 0 to 239.
For example, if the character width is 10 pixels, then
the address range is equal to twice the number of
characters, less 2. See Section 9.1.1 for the calcula-
tion of C/R.
[C/R] cannot be set to a value greater than the
address range. It can, however, be set smaller than
the address range, in which case the excess display
area is blank. The number of excess pixels must not
exceed 64.
Table 6. Display line address range
C/R
HEX D7 D6 D5 D4 D3 D2 D1 D0
00
0
0
0
0
0
0
0
0
01
0
0
0
0
0
0
0
1
↓
↓
↓
↓
↓
↓
↓
↓
↓
4F
0
1
0
0
1
1
1
1
↓
↓
↓
↓
↓
↓
↓
↓
↓
EE
1
1
1
0
1
1
1
0
EF
1
1
1
0
1
1
1
1
[C/R] bytes per display line
1
2
↓
80
↓
239
240
3.2.1.13 TC/R
Sets 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 9.1.1 in
order to hold the frame period constant and minimize
jitter for any given main oscillator frequency, f_OSC.
Table 7. Line length selection
TC/R
HEX D7 D6 D5 D4 D3 D2 D1 D0
00
0
0
0
0
0
0
0
0
01
0
0
0
0
0
0
0
1
↓
↓
↓
↓
↓
↓
↓
↓
↓
52
0
1
0
1
0
0
1
0
↓
↓
↓
↓
↓
↓
↓
↓
↓
FE
1
1
1
1
1
1
1
0
FF
1
1
1
1
1
1
1
1
[TC/R] line length (bytes)
1
2
↓
83
↓
255
256
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