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| VIDEO MODES |
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| IBM VGA |
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| VESA |
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RESOLUTION |
| 640 x 400 |
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| 640 x 480 |
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| 800 x 600 | |||
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Video Clock |
| 25.175 MHz |
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| 25.175 MHz |
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| 50.000 MHz | |||
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Horizontal Scan Frequency |
| 31.468 KHz |
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| 31.468 KHz |
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| 48.077 KHz | |||
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Horizontal Line Period | 31 | .778 | µs | 800 dots | 31 | .778 | µs | 800 dots | 20 | .800 | µs | 1040 dots |
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Horizontal Blanking | 6 | .356 | µs | 160 dots | 6 | .356 | µs | 160 dots | 4 | .800 | µs | 240 dots |
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Horizontal Sync Pulse | 3 | .813 | µs | 96 dots | 3 | .813 | µs | 96 dots | 2 | .400 | µs | 120 dots |
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Horizontal Front Porch | 0 | .636 | µs | 16 dots | 0 | .636 | µs | 16 dots | 1 | .120 | µs | 56 dots |
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Horizontal Back Porch | 1 | .907 | µs | 48 dots | 1 | .907 | µs | 48 dots | 1 | .280 | µs | 64 dots |
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Horizontal Active Display | 25 | .422 | µs | 640 dots | 25 | .422 | µs | 640 dots | 16 | .000 | µs | 800 dots |
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Horizontal Sync Polarity |
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Vertical Scan Frequency |
| 70.087 Hz |
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| 59.94 Hz |
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| 72.187 Hz | |||
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Vertical Frame Period | 14 | .268 | ms | 449 line | 16 | .683 | ms | 525 line | 13 | .853 | ms | 666 line |
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Vertical Blanking | 1 | .557 | ms | 49 line | 1 | .430 | ms | 45 line | 1 | .373 | ms | 66 line |
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Vertical Sync Pulse | 0 | .064 | ms | 2 line | 0 | .064 | ms | 2 line | 0 | .125 | ms | 6 line |
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Vertical Front Porch | 0 | .381 | ms | 12 line | 0 | .318 | ms | 10 line | 0 | .770 | ms | 37 line |
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Vertical Back Porch | 1 | .112 | ms | 35 line | 1 | .049 | ms | 33 line | 0 | .478 | ms | 23 line |
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Vertical Active Display | 12 | .711 | ms | 400 line | 15 | .254 | ms | 480 line | 12 | .480 | ms | 600 line |
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Vertical Sync Polarity |
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Note: For video mode 720 x 400 missing video rows and columns are allowed. This is a text mode only. Performance is acceptable if characters as defined section 1.2.1 are legible. Missing row or columns at edge of display is acceptable as long as characters remain legible.
Title: Product Specification: LC12 | Page 14 of 24 |
Document Number: | Revision: A |
