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VIH overshoot: VIH,max = VDDQ + 1.2V for a pulse width ≤ 3ns, and the pulse width cannot
2 K; K$ u) k6 r1 _be greater than one-third of the cycle rate. VIL undershoot: VIL,min = –1.2V for a pulse8 ?9 z5 Q7 g% S( l. `
width ≤3ns, and the pulse width cannot be greater than one-third of the cycle rate.$ p& L* L1 A# \% N8 k Y
: V% v6 X, L6 U+ z3 ]. n6 ]% a1 `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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