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VGA Signal 640 x 400 @ 70 Hz timing

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General timing

Screen refresh rate 70 Hz
Vertical refresh 31.46875 kHz
Pixel freq. 25.175 MHz

Horizontal timing (line)

Polarity of horizontal sync pulse is negative.

Scanline part Pixels Time [µs]
Visible area 640 25.422045680238
Front porch 16 0.63555114200596
Sync pulse 96 3.8133068520357
Back porch 48 1.9066534260179
Whole line 800 31.777557100298

Vertical timing (frame)

Polarity of vertical sync pulse is positive.

Frame part Lines Time [ms]
Visible area 400 12.711022840119
Front porch 12 0.38133068520357
Sync pulse 2 0.063555114200596
Back porch 35 1.1122144985104
Whole frame 449 14.268123138034

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