Multiple SDRAM chip support

[paulnichols]

Can multiple SDRAM chips be added to the RT1050 (eg: MIMXRT1051DVL6A) external memory interface to expand the amount of addressable RAM? For my application I am needing at least 64MB of RAM and to make this cost effective is seems 2 x 32MB (16MB x 16 bit width) chips would be best.

From the datasheet it seems possible using multiple CS line but the following statement from a supporting RT1050 introduction slide deck (page 17 - https://www.nxp.com/docs/en/supporting-information/i.MX-RT1050-Supporting-Inf.pdf) seems to indicate support for only a single 16 bit width DRAM is possible.

"Support single x16 DRAM chip or dual x8 DRAM chip" 

Just needing to confirm I can achieve 64MB (or even 96MB) of extern SDRAM on this platform. 

Thanks

[Yuri]

Hello,

  According to i.MX RT1050 Reference Manual its memory controller SEMC supports

SDRAM interface with the following features:

• 8/16 bit modes;

• Up to 512Mb per each Chip Select (CS) and up to 4 CS.

Have a great day,
Yuri

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