HD66730 Datasheet, PDF (96/131 Pages) Hitachi Semiconductor – Dot-Matrix Liquid Crystal Display Controller/Driver Supporting Japanese Kanji, Korean Font Display

Examples of Register Setting
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)
300 00 000111
401 00 000001
Index register set (R7 designation)
Shifts the second line to the left by one dot
CPU Wait
501 10 000010
Shifts the second line to the left by two dots
CPU Wait
601 10 000011
Shifts the second line to the left by three dots
CPU Wait
51 0 1 1 0 1 1 0 0 0 0 Shifts the second line to the left by 48 dots*
Note: The number of dots that can be specified for scrolling is 48. Scrolling for more than this
number can be achieved by rewriting DDRAM data and scrolling again from dot 0.
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 29 Example of Executing Smooth Scroll to the Left
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