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VIH overshoot: VIH,max = VDDQ + 1.2V for a pulse width ≤ 3ns, and the pulse width cannot6 B+ c3 z0 |; }6 L
be greater than one-third of the cycle rate. VIL undershoot: VIL,min = –1.2V for a pulse
6 Z s7 g2 h' Z) pwidth ≤3ns, and the pulse width cannot be greater than one-third of the cycle rate.
( {1 f. N5 x4 e* B+ q' V3 t5 } x$ w# q+ U! v' K+ n! Z3 K
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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