VESA Signal 640 x 350 @ 85 Hz timing

General timing

Screen refresh rate	85 Hz
Vertical refresh	37.860576923077 kHz
Pixel freq.	31.5 MHz

Horizontal timing (line)

Polarity of horizontal sync pulse is positive.

Scanline part	Pixels	Time [µs]
Visible area	640	20.31746031746
Front porch	32	1.015873015873
Sync pulse	64	2.031746031746
Back porch	96	3.047619047619
Whole line	832	26.412698412698

Vertical timing (frame)

Polarity of vertical sync pulse is negative.

Frame part	Lines	Time [ms]
Visible area	350	9.2444444444444
Front porch	32	0.84520634920635
Sync pulse	3	0.079238095238095
Back porch	60	1.5847619047619
Whole frame	445	11.753650793651