He is looking for controllerless flash memory - the controller adds one
more point of failure in a radiation intense environment.

-Adam

Tal Dayan wrote:

>Yes,
>
>IDE   http://www.m-sys.com/content/products/FFDfamilyPage.asp
>
>TFFS
>http://www.m-sys.com/content/products/product.asp?PID=2&FILE=doc2k&FAM=doc
>
>and
>
>USB  http://www.diskonkey.com/
>
>All from the same company, M-Systems .
>
>Tal
>
>
>
>>-----Original Message-----
>>From: pic microcontroller discussion list
>>[mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Wojciech Zabolotny
>>Sent: Friday, June 21, 2002 7:21 AM
>>To: PICLIST@MITVMA.MIT.EDU
>>Subject: [EE]: FLASH memory interfacing - really so complicated?
>>
>>
>>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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