hd66731a01tb0l Renesas Electronics Corporation., hd66731a01tb0l Datasheet - Page 97

• Manufacturer Part Number: hd66731a01tb0l
• Description: Dot-matrix Liquid Crystal Display Controller/driver Supporting Japanese Kanji, Korean Font Display - Hitachi Semiconductor
• Manufacturer: Renesas Electronics Corporation.

HD66730/HD66731
96
49
51
Note: The number of dots that can be specified for scrolling is 48. Rewrite 48 dots (4 characters)
1
2
3
4
5
R/W RS
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0
0
0
0
0
0
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).
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1
0
1
1
1
1
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
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1
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1
Figure 30 Example of Executing Smooth Scroll to the Right
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CPU Wait
CPU Wait
CPU Wait
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0
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1
1
0
0
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1
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0
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0
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1
0
Index register set (R6 designation)
Enables scroll (scrolls only the second line)
Index register set (R7 designation)
Shifts the second line to the left by 48 dots*
Shifts the second line to the left by 47 dots
Perform no shift
Shifts the second line to the left by one dot