ks0074 Samsung Semiconductor, Inc., ks0074 Datasheet - Page 29

• Manufacturer Part Number: ks0074
• Description: 34com/80seg Driver & Controller For Dot Matrix Lcd
• Manufacturer: Samsung Semiconductor, Inc.

KS0074
8) Shift/Scroll Enable (RE = 1)
? (DH = 0)
HS : Horizontal Scroll per Line Enable
@ (DH = 1)
DS : Display Shift per Line Enable
Table 8. Relationship between DS and COM signal
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 the line in 1-line display mode or the 1st line in 2-line display mode is to be scrolled, 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)
This instruction selects shifting line to be shifted 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 1st line is shifted and the 2nd line is not shifted.
When only DS1 = "High", only the half of the 1st 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










Enabled common signals



COM17  COM24
COM25  COM32
COM9  COM16
COM1  COM8
34COM/80SEG DRIVER & CONTROLLER FOR DOT MATRIX LCD
during shift





%

%



%


The part of display line that corresponds to enabled

%


common signal can be shifted.
Description