S6A0074 Datasheet, PDF (37/68 Pages) Samsung semiconductor – 34COM/80SEG DRIVER & CONTROLLER FOR DOT MATRIX LCD

34COM/80SEG DRIVER & CONTROLLER FOR DOT MATRIX LCD
S6A0074
Cursor or Display Shift (RE = 0)
RS
R/W
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
0
0
0
0
0
1
S/C
R/L
X
X
Without writing or reading of display data, shift right/left cursor position or display. This instruction is used to
correct or search display data.(refer to Table 7) during 2-line mode display, cursor moves to the 2nd line after
40th digit of 1st line. When 4-line mode, cursor moves to the next line, only after every 20th digit of the current
line. Note that display shift is performed simultaneously in all the line. When displayed data is shifted repeatedly,
each line shifted individually. When display shift is performed, the contents of address counter are not changed.
Table 11. Shift Patterns according to S/C and R/L Bits
S/C
R/L
Operation
0
0
Shift cursor to the left, address counter is decreased by 1
0
1
Shift cursor to the right, address counter is increased by 1
1
0
Shift all the display to the left, cursor moves according to the display
1
1
Shift all the display to the right, cursor moves according to the display
Scroll Enable (RE = 1)
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)
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