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Altera_Forum
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9 years ago

Cyclone V 5CEFA4F23C8 has 24 DQ pins for LPDDR2 Hard Memory Interface

Hi. I am using the 5CEFA4F23C8 and LPDDR2 in a design, and I want to use the Hard Memory Interface for LPDDR2. I've noticed that the LPDDR2 hard interface has 24 dedicated DQ pins. That se...
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Altera_Forum
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9 years ago

It does seem to be a strange number for DDR interface. As I understand it though, if you use the HMC at x16 then you should be able to use the unused pins for other purposes, but note that they will have I/O voltage of your LPDDR2 interface.

I think the point for the x24 is if you enable ECC.