lpcware

LPC4337 external SDRAM options?

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 18, 2016 by lpcware
Content originally posted in LPCWare by ZZZMQP on Wed May 18 05:56:02 MST 2016
Hi,

I'm working with the LPC4337 and need to add a significant amount of fast RAM (16+MByte) to buffer a data stream. What are my options?

EMC is the obvious choice, however, I need all SGPIO pins and USB0/1, maybe SD/MMC, and there doesn't seem to be a way to make EMC happen from a pin mux point of view (regardless of the package).

SPIFI would be the perfect interface, but I need RAM, not FLASH. Read [u]and[/u] write speed must be at least 25mByte/s, without write cycle limitations (continuously buffering). I found one Quad SPI SRAM chip (http://www.cypress.com/products/1-mb-quad-spi-nvsram), but it's only 128kB.

Any comments/ideas?

Thanks!

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