NL128102AC23-02 NEC, NL128102AC23-02 Datasheet - Page 23

• Manufacturer Part Number: NL128102AC23-02
• Description: LCD Module
• Manufacturer: NEC

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EXPANSION FUNCTION
(1) How to use expansion mode
Expansion mode is a function to expand screen. For example, VGA signal has 640
display data can expanded to 2.0 times vertically and horizontally,VGA screen image can be displayed fully on
the screen of SXGA resolution.
This LCD module has the function that expands vertical direction as shown in the following table. And
expanding horizontal direction is possible by setting input CLK frequency equivalent to the magnification. It is
necessary to make this CLK outside of this LCD module.
Please adopt this mode after evaluating display quality, because the appearance in the expansion mode is
happened to be relatively bad in some cases.
The followings show the display magnifications for each mode.
Note The horizontal magnification multiples the input clock (CLK).
Input display
Input CLK = system CLK
Example In case of SXGA and VGA, CLK frequency can be decided as follows.
VGA text
SXGA
SVGA
MAC
XGA
VGA
SUN
SXGA: (system CLK (108.0 MHz))
VGA : (system CLK (25.175 MHz))
Number of pixels
1280
1024
1152
horizontal magnification.
800
640
720
832
Data Sheet EN0491EJ1V0DS00
1024
600
480
400
624
768
900
1.0 = 108.0 MHz.
2.0 = 50.35 MHz.
Vertical
1.25
1.6
2.0
2.5
1.6
1.1
1
Magnification
NL128102AC23-02
480 pixels. But, if the
Horizontal Note
1.25
1.6
2.0
1.7
1.5
1.1
1
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