S6B0755 Datasheet, PDF (46/68 Pages) Samsung semiconductor – 128 SEG / 65 COM DRIVER & CONTROLLER FOR STN LCD

S6B0755
PRELIMINARY SPEC. VER. 1.0
128 SEG / 65 COM DRIVER & CONTROLLER FOR STN LCD
Set N-line Inversion Register
Sets the inverted line number within range of 3 to 33 to improve the display quality by controlling the phase of
the internal LCD AC signal (Internal M) by using the 2-byte instruction.
The DC-bias problem could be occurred if K is even number. So, we recommend customers to set K to be
odd number. K : D/N
D : The number of display duty ratio (D is selectable by customers)
N : N for N-line inversion (N is selectable by customers).
The 1^st Instruction
RS
RW
0
0
DB7
0
DB6
1
DB5
0
DB4
0
DB3
1
DB2
1
DB1
×
DB0
×
The 2^nd Instruction
RS
RW
0
0
DB7
×
DB6
×
DB5
×
DB4
N4
DB3
N3
DB2
N2
DB1
N1
DB0
N0
N4
N3
N2
N1
N0
0
0
0
0
0
0
0
0
0
1
0
0
0
1
0
:
:
:
:
:
1
1
1
0
1
1
1
1
1
0
1
1
1
1
1
Selected n-line inversion
0-line inversion (frame inversion)
3-line inversion
4-line inversion
:
31-line inversion
32-line inversion
33-line inversion
Setting N-line Inversion Start
1^st Instruction (Mode Setting)
2^nd Instruction (N-line Inversion Setting)
Setting N-line Inversion End
Figure 32. Sequence for Setting Partial Display
Release N-line Inversion
Returns to the frame inversion condition from the n-line inversion condition.
RS
RW
DB7
DB6
DB5
DB4
DB3
DB2
0
0
1
1
1
0
0
1
DB1
0
DB0
0
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