AnsweredAssumed Answered

What is the maximum DDR size that BF54x can support?

Question asked by kaushal Employee on Jan 21, 2009
Latest reply on Sep 4, 2009 by vapier



Is there an manual/data sheet error of the  size of DDR that BF54x can be

From BF54x  HRM,


* Supports industry standard double data rate (DDR SDRAM) from 64  Mbit to
512 Mbit device sizes with a configuration of x4, x8, or x16.
*  Provides 16-bit wide data interface to DDR SDRAM.
* Supports up to 256 MB of  DDR SDRAM with one external bank.


The manual said BF54x can support  up to 256MB per external bank, however,
there is another paragraph  saying that it can support up to 512Mb device which
is only 64 MB. This  description is confusing. Can we connect a 1 Gbit or
larger DDR? If not,  how can we get 256MB per external bank.