TinyVGA.com: VGA Microcontroller projects

VESA Signal 720 x 400 @ 85 Hz timing

General timing

Screen refresh rate 85 Hz

Vertical refresh 37.92735042735 kHz

Pixel freq. 35.5 MHz

Polarity of horizontal sync pulse is negative.

Scanline part Pixels Time [µs]

Visible area 720 20.281690140845

Front porch 36 1.0140845070423

Sync pulse 72 2.0281690140845

Back porch 108 3.0422535211268

Whole line 936 26.366197183099

Polarity of vertical sync pulse is positive.

Frame part Lines Time [ms]

Visible area 400 10.546478873239

Front porch 1 0.026366197183099

Sync pulse 3 0.079098591549296

Back porch 42 1.1073802816901

Whole frame 446 11.759323943662