S6A0074 Datasheet, PDF (28/68 Pages) Samsung semiconductor – 34COM/80SEG DRIVER & CONTROLLER FOR DOT MATRIX LCD

S6A0074
34COM/80SEG DRIVER & CONTROLLER FOR DOT MATRIX LCD
Shift/Scroll Enable (RE = 1)
(DH = 0)
RS
R/W
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
0
0
0
0
0
1
HS4
HS3
HS2
HS1
HS: Horizontal scroll per line enable
This instruction makes valid dot shift by a display line unit. HS1, HS2, HS3 and HS4 indicate each line to
be dot scrolled, and each scroll is performed individually in each line.
If you want to scroll the line in 1-line display mode or the 1st line in 2-line display mode, set HS1 and
HS2 to "High".
If the 2nd line scroll is needed in 2-line mode, set HS3 and HS4 to "High". (refer to Table 8)
(DH = 1)
RS
R/W
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
0
0
0
0
0
1
DS4
DS3
DS2
DS1
DS: Display Shift per Line Enable
This instruction selects shifted to be according to each line mode in display shift right/left instruction.
DS1, DS2, DS3 and DS4 indicate each line to be shifted, and each shift is performed individually in each
line. IF DS1 and DS2 is set to “High” (enable) in 2 line mode, only the first line is shifted and the second
line is not shifted. When only DS1 = “High”, only the half of the first line is shifted. If all the DS bits (DS1
to
DS4) are set to “Low” (disable), no display is shifted.
Enable Bit
HS1/DS1
HS2/DS2
HS3/DS3
HS4/DS4
Table 8. Relationship between DS and COM Signal
Enabled Common Signals during Shift
Operation
COM1 ~ COM8
The part of display line that corresponds to
enabled Common signal can be shifted.
COM9 ~ COM16
COM17 ~ COM24
COM25 ~ COM32
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