HD66730 Datasheet, PDF (97/131 Pages) Hitachi Semiconductor – Dot-Matrix Liquid Crystal Display Controller/Driver Supporting Japanese Kanji, Korean Font Display

HD66730/HD66731
R/W RS DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
1 0 0 0 0 0 0 0 1 1 0 Index register set (R6 designation)
2 0 1 0 0 0 1 0 0 1 0 Enables scroll (scrolls only the second line)
3 0 0 0 0 0 0 0 1 1 1 Index register set (R7 designation)
4 0 1 1 0 1 1 0 0 0 0 Shifts the second line to the left by 48 dots*
CPU Wait
50 1 10101111
Shifts the second line to the left by 47 dots
CPU Wait
49 0 1 1 1 0 0 0 0 0 1
CPU Wait
51 0 1 1 0 0 0 0 0 0 0
Shifts the second line to the left by one dot
Perform no shift
Note: The number of dots that can be specified for scrolling is 48. Rewrite 48 dots (4 characters)
of data inside the DDRAM and shift them to the right before scrolling. Scrolling for more
than this number can be achieved by rewriting the data of DDRAM and begin scrolling
from dot 48 again. Note that the number of characters shown on the LCD and the number
of scroll characters must be less than the number of maximum display characters (1-line
display mode: 40 characters, 2-line display mode: 20 characters, 4-line display mode:
10 characters).
Figure 30 Example of Executing Smooth Scroll to the Right
96