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BF54x mobile DDR guidance

Question asked by twilkers Employee on Sep 21, 2010
Latest reply on Sep 22, 2010 by JoeT

My customer has designed his system around mobile DDR and is unsure what voltage these pins need to be tied to.  I didn’t see any mobile memory app notes and it’s not really clear how to handle the DDR power domain.

 

More specifically, they started with a 2.5v system, then changed designers, then migrated to 1.8v system.

 

Can you supply additional guidance?

 

The following pins supposed to be connected to 2.5v or 1.8v?

 

Pin list for VDDR (2.5 or 1.8V)

 

F10, 11,12
G15
H13,14,15
J14,15
K14,15

 

thanks,

tim

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