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您好,, {& i0 l" E! S( O
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? |; j% O; Q" N8 w( g' J+ h
PDCHxSM : Very Fast Schmitt Trigger Non-Inverting Clock Input Pad,5V-Tolerant, Connecting VDD5V Power Ring+ q3 @; o4 @- r$ ~3 G" n4 o
PDCHxSZ : High Drive, Schmitt Trigger Input Clock Pad, 5V-Tolerant
& E5 T3 P" [0 DPDCHxTZ : High Drive, TTL Input Clock Pad, 5V-Tolerant
" \9 D! Q, q& [2 q, W! PPDCxTZ : Very Fast TTL Non-Inverting Clock Driver, 5V-Tolerant* d1 ^5 k- w7 c. U9 T
PDIM : Input Pad, 5V-Tolerant, Connecting VDD5V Power Ring
7 {& t1 _4 D+ K. j- `( ?, q# i4 IPDISM : 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 b" e- J2 V, O
而晶片是 PAD limit1 L9 {5 T: X; l, r# U9 v
B/R; x% k/ b6 n2 I. S
Jerry Yau1 U8 N1 }; j( T$ _$ @- `
V7 P8 W3 u5 U M1 B; k3 {% h[ 本帖最後由 jerryyao 於 2009-5-8 02:48 PM 編輯 ] |
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