TinyVGA.com: VGA Microcontroller projects

VGA Signal 640 x 350 @ 70 Hz timing

General timing

Screen refresh rate 70 Hz

Vertical refresh 31.46875 kHz

Pixel freq. 25.175 MHz

Polarity of horizontal sync pulse is positive.

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

Polarity of vertical sync pulse is negative.

Frame part Lines Time [ms]

Visible area 350 11.122144985104

Front porch 37 1.175769612711

Sync pulse 2 0.063555114200596

Back porch 60 1.9066534260179

Whole frame 449 14.268123138034