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Paralleling microSD cards

kellys_eye

Jun 25, 2010
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Has anyone ever parallel-connected multiple micro-SD cards? If so, what technique/results did you get?

Can you parallel the data lines and switch the power lines 'as required' or do the data lines need isolating bi-directional buffers?
 

kellys_eye

Jun 25, 2010
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Couple of nice and clear pdf's there bertus - thanks for taking the time to post the links.

But if anyone has done this and can report on their results I'd be interested to hear how they got on.
 

bertus

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Nov 8, 2019
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Hello,

Did you read the pages 7 and 8 of the kingston PDF?
It shows the SPI method with bus connections.

Bertus
 

kellys_eye

Jun 25, 2010
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Yup.
The potential intent is fully read-only and I can see the technique for 'paralleling' but would like to know if there are any particular performance issues in a real-world example and whether or not others switched the power lines (power saving).
 
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