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VIH overshoot: VIH,max = VDDQ + 1.2V for a pulse width ≤ 3ns, and the pulse width cannot: g$ \) x! |5 i3 Z/ V: f& e
be greater than one-third of the cycle rate. VIL undershoot: VIL,min = –1.2V for a pulse
% c" Q; h' `. u% gwidth ≤3ns, and the pulse width cannot be greater than one-third of the cycle rate.
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0 @6 \7 S8 B4 e* W7 y! ?* k- B; s$ U/ M6 r大家是如何理解这段话的，比如供电电压为3.3V，是不是只要过冲电压小于4.5V，下冲电压大于-1.2V就可以了，我不大理解for a pulse width ≤ 3ns, and the pulse width cannot be greater than one-third of the cycle rate ，这句话是说的啥意思呢？？？ |
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发表于 2012-10-26 18:49
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支持！
反对！