James, ideally it is the best for 100% fault coverage.  Is it possible?  Even the pricy LSI tester can only cover x% of logic and y% of memory block, etc. etc.  Plus the redundancy most likely in his case is a requirements, 100% is a costly and time consuming proposition.  Agree, design need to put an handle on it at day one, it just impossible to do it as after thoughts.  
My 1.92 cents (devalue everyday :-(.  

Joyce Koo
Researcher
Materials Interconnect Lab
Office: (519) 888-7465 79945
BlackBerry: (226) 220-4760

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of James
Sent: Thursday, May 23, 2013 11:15 AM
To: [log in to unmask]
Subject: Re: [TN] ICT Coverage

Agreed 


James Hofer
General Manager
Accurate Circuit Engineering (ACE)
3019 S. Kilson Dr.
Santa Ana CA 92707-4202
[log in to unmask]
(714) 546-2162 wk
(714) 473-6127 cell
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ISO9001
MIL-PRF-31032 and 55110

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Tan Geok Ang
Sent: Sunday, May 12, 2013 6:43 PM
To: [log in to unmask]
Subject: Re: [TN] ICT Coverage

The design shall build in with 100% testability, if only 90% test able, it still means that 100% bad device are shipped out of the factory...if the something (e.g. component issue, etc) happened on with the 10% which was not tested,  = 100% reject!

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Robert Kondner
Sent: Saturday, 11 May 2013 12:26 AM
To: [log in to unmask]
Subject: Re: [TN] ICT Coverage

Hi,

 Hmmmmm, I smell bad math.  (Smells like Hog Wash if I remember correctly!)  :-)

 If you line produces 10% bad device (90% yield which is pretty bad depending on what you are building) and your ICT coverage is only 90% you will have a 1% rate of failure going out the door. 

Bob K.

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Dave Schaefer
Sent: Friday, May 10, 2013 11:19 AM
To: [log in to unmask]
Subject: Re: [TN] ICT Coverage

If ICT is your only or primary test strategy then anything less than 100% coverage is unacceptable.

Would you want tell your customers you are 90% certain the product you are delivering works?

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