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The Best Way to Test and Not to Test DDR Memories

Posted December 05, 2014 12:00 AM by Engineering360 eNewsletter

The proliferation of dual data-rate SDRAMs in computers and computing systems of all descriptions over the past two decades has significantly complicated the task of testing the devices when compared to their single data-rate predecessors. Testing requires strictly controlling clock and data timing and taking other precautions. This series of four articles examines how to conduct such tests to get the best results. Part I presents some general "best practices" techniques. Part II covers design-for-testability issues. In Part III, the author provides a few common pitfalls in performing the tests, and Part IV shows how to prepare the memories for testing.


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#1

Re: The Best Way to Test and Not to Test DDR Memories

12/05/2014 9:12 AM

What is the best method for testing the Signetics 25120 Write only memory?

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Re: The Best Way to Test and Not to Test DDR Memories

12/05/2014 9:58 AM

First-In-Never-Out Asynchronous Buffers.

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Re: The Best Way to Test and Not to Test DDR Memories

12/05/2014 11:19 AM

Half the space is wasted storing nothing. You'd think they could figure out a way to store just the 1s.

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Re: The Best Way to Test and Not to Test DDR Memories

12/05/2014 11:28 PM

HA! Where'd you find that? Sure looks authentic...

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Re: The Best Way to Test and Not to Test DDR Memories

12/08/2014 12:25 PM

Thanks for the mental health food!

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