Does the flash have to be mobile?

You can use regular flash chips (dip, soic, etc) and it may be better
for you to do so.  They program/read in parallel and you can get them in
many sizes.

If you have to be able to move them (like the MMC, etc) then you can
easily build your own cartridge with radiation hardening on the outside.
 You can even get radiation hardened chips from some manufacturers (made
for space applications).

Digikey has some, I'm sure you can get them from RS or your local
electronics supplier.

-Adam

Wojciech Zabolotny wrote:

>Hi All,
>
>I have to build a small FPGA based "memory controller", which should
>use the FLASH memory contents to reconfigure some others FPGAs from time
>to time. The whole thing will work in irradiated area, so there is a need
>for memory errors detection and refreshing the memory contents, when it's
>getting corrupted.
>Anyway I need to implement a FPGA based FLASH memory controller, and when
>I've checked the FLASH memory interface standards I got really upset.
>Because of my special environment (radiation!) I prefer controllerless
>FLASHes. I've found two standards: SmartMedia (description may be found
>eg. in this datasheet:
>http://samsungelectronics.com/semiconductors/Flash/SmartMedia/64M_Byte/K9S1208V0M/k9s1208v0m.pdf
>) and CFI (description may be found there:
>ftp://download.intel.com/design/flcomp/applnots/29220404.pdf )
>
>Unfortunately both are so complicated, that I'm not sure if the suitable
>controllers will fit in the reasonable FPGA...
>Are there any simpler FLASH memory interface standards?
>
>--
>                               TIA & best regards,
>                              Wojciech M. Zabolotny
>        http://www.ise.pw.edu.pl/~wzab  <--> wzab@ise.pw.edu.pl
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