NL160120AC27_01 NEC, NL160120AC27_01 Datasheet - Page 27

• Manufacturer Part Number: NL160120AC27_01
• Description: TFT COLOR LCD MODULE
• Manufacturer: NEC

4.8 EXPANSION FUNCTIONS
4.8.1 HOW TO USE EXPANSION MODES
Expansion mode is a function to expand screen. For example, VGA signal has 640 × 480 pixels.
But, if the display data can expanded to 2.5 times vertically and horizontally, VGA screen image can
be displayed fully on the screen of UXGA resolution.
This LCD module has the function that expands vertical direction as shown in 4.7.1 Table 1.
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 expansion mode is
happened to be relatively bad in some cases.
The followings show display magnifications for each mode.
Note1: The horizontal magnification multiples the input clock (CLK).
VGA text
display
UXGA
SXGA
SVGA
MAC
XGA
VGA
Input
SUN
Input CLK = system CLK × horizontal magnification
Example: In case of UXGA and VGA, CLK frequency can be decided as follows.
1600 × 1200
1280 × 1024
1152 × 864
1024 × 768
1152 × 900
Number of
832 × 624
800 × 600
640 × 480
720 × 400
UXGA: System CLK (162.0MHz) × 1.0=162.0MHz
VGA: System CLK (25.175MHz) × 2.5= 62.94MHz
pixels
DATA SHEET EN0558EJ1V0DS00
Vertical
1.17
1.38
1.56
1.33
1.92
1.0
2.0
2.5
3.0
Magnification
Horizontal Note1
1.25
1.38
1.56
1.38
1.92
1.0
2.0
2.5
2.2
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