Minimum input voltage for edge capture

[zorrotz]

Hi,

In a KV4X, for a digital input, input voltage high is 0.7 x Vdd and input voltage low is 0.35 x Vdd.

Which are the minimum and maximum values for edge capture?

I have a sinusoidal signal of 200 mV peak in an input pin and I see that it is enough to detect falling/rising edges.

Thanks in advance

[zorrotz · Accepted solution]

I have found why edges were being detected with such a low signal.

[EdwinHz]

Hi @zorrotz,

Please maintain the edges of the captured signal between 0.7 x Vdd and 0.35 x Vdd in order to ensure a proper edge detection of the signal.

[zorrotz]

I have forgotten to say that Vdd = 3.3 V