HD66740 Datasheet, PDF (66/95 Pages) Hitachi Semiconductor – 112 x 80-dot Graphics LCD Controller/Driver

HD66740
Double-height Display
The HD66740 can double the height of any desired line from the first to 10th lines. A line can be selected
by the DL1 to DL10 bits as listed in table 25. All graphics display patterns stored in the CGRAM can be
doubled in height, allowing easy recognition. Note that there should be no space between the lines for
double-height display (figure 36).
In vertical smooth scrolling, when the display-start setting line is displaying at double height, scrolling
can be done by each two-line (dot).
Table 25 Double-height Display Specifications
Bit Setting
DL1 = 1
DL2 = 1
DL3 = 1
DL4 = 1
DL5 = 1
DL6 = 1
DL7 = 1
DL8 = 1
DL9 = 1
DL10 = 1
Display Position
1st line: double-height
2nd line: double-height
3rd line: double-height
4th line: double-height
5th line: double-height
6th line: double-height
7th line: double-height
8th line: double-height
9th line: double-height
10th line: double-height
- NL3-0 = "1001" (10-line display)
- DL2 = 1
- DL8 = 1
Double height
display
(2nd line)
Double height
display
(8th line)
Figure 36 Double-height Display (2nd and 8th Lines)
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