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您好,
; o" Q9 G% ?! c下面列出CIC提供的TSMC 0.35 I/O PAD,請問如果我的IC要接受外面一顆48MHz的crystal送過來的clock訊號要用哪一個PAD比叫好?* A) S) h- n: k, c: b. T
PDCHxSM : Very Fast Schmitt Trigger Non-Inverting Clock Input Pad,5V-Tolerant, Connecting VDD5V Power Ring7 ~7 \9 G0 k+ T5 p6 m& p
PDCHxSZ : High Drive, Schmitt Trigger Input Clock Pad, 5V-Tolerant
' p1 Z% \" v& y$ j* p. k- _8 dPDCHxTZ : High Drive, TTL Input Clock Pad, 5V-Tolerant
* e6 m7 T) T# r& [1 {3 |PDCxTZ : Very Fast TTL Non-Inverting Clock Driver, 5V-Tolerant& P% w) f8 h# g4 p \, q
PDIM : Input Pad, 5V-Tolerant, Connecting VDD5V Power Ring+ Z# Z+ n- w. g6 v
PDISM : Schmitt Trigger Input Pad, 5V-Tolerant, Connecting VDD5V Power
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PDCHxSM,PDCHxSZ,PDCHxTZ and PDCxTZ需要2個PAD windows,其他只要一個PAD windows,6 j- o4 I2 h h$ x/ z
而晶片是 PAD limit9 G v; q' @+ I( w# i
B/R
, V) ^( o1 f( F* n/ }8 I; xJerry Yau
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[ 本帖最後由 jerryyao 於 2009-5-8 02:48 PM 編輯 ] |
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