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Article #230Question regarding probe pads
From: Tapas Banerjee
Date: Fri, 04 Sep 1992 02:20
Date: Fri, 04 Sep 1992 02:20
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1385 bytes
Some points about landing probe pads inside a design chip seems to be unclear to me. Hope some kind soul would be able to help me out. Say I want to probe a point in the circuit, which is a point inside a standard cell. Since standard cells are designed very compact - I have the following question. Is the standard practice is of landing probe pads inside standard cell, or that of taking a metal(?) wire out from the point and placing the probe point at a convenient point outside standard cells. The reason I have this question is - that if you want to put a probe pad inside a cell, I believe it is going to be small enough to satisfy various design rules. And my personal experience says that for a novice prober, anything less than 50 micron square is dangerous. Since a bit of vibration may land you into a serious trouble. Any help will be appreciated. Thanks in advance. - TAPAS
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Newsgroups: comp.lsi Path: arc1-ca.pugleaf.net!sparky!uunet!cs.utexas.edu!torn!csd.unb.ca!morgan.ucs.mun.ca!pooh.engr.mun.ca!tapas From: tapas@pooh.engr.mun.ca (Tapas Banerjee) Subject: Question regarding probe pads Message-ID: <tapas.715573218@femto.engr.mun.ca> Summary: Same as heading Keywords: probe pads Sender: usenet@morgan.ucs.mun.ca (NNTP server account) Organization: Memorial University of Newfoundland Date: Fri, 4 Sep 1992 02:20:18 GMT Lines: 19