DDR2 256Mb memory organization

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hithesh123

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I was looking at 256MB DDR2 Memory. The datasheet 8Megx8x4 banks
What exactly does it mean?
I looked at the 32Megx8 memory block diagram in page 12 of datasheet. Now I am even more confused.
datasheet - http://download.micron.com/pdf/datasheets/dram/ddr2/256MbDDR2.pdf

---------- Post added at 19:40 ---------- Previous post was at 17:57 ----------

Found this post - https://www.edaboard.com/threads/144044/

Answered my question. But I got another question - what is cell size ?
In the elpida app note (**broken link removed**) cell size is 16?
The app note says 16 IO lines. Why do you need 16 IO lines? or 32 in case of micron.
 

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