Compact Falsh format RAM card

[[email protected]]

I have a device which uses a Compact Flash format NAND Flash memory
card.
Does anyone know of a RAM based version of a Compact Flash card, with
the same interface and form factor.
I can't change the embedded S/W or H/W.
For security reasons the cards memory must be "lost" at power down. I
have no prior knowledge of when power will be lost. The system will
format the card at power-up.

 

[Mac]

I have a device which uses a Compact Flash format NAND Flash memory
card.
Does anyone know of a RAM based version of a Compact Flash card, with
the same interface and form factor.
I can't change the embedded S/W or H/W.
For security reasons the cards memory must be "lost" at power down. I
have no prior knowledge of when power will be lost. The system will
format the card at power-up.

Doesn't the system have RAM you can use? Or can you encrypt the data prior
to writing it to the CF?

The irony of your request is just too good to pass up. Compact Flash is
specifically for non-volatile storage. Usually if volatile is OK, you just
use RAM!

But you can't use Compact Flash because it is non-volatile. You want a
volatile non-volatile device. ;-) It's like asking for a leaky bucket.

I doubt anybody makes such a thing, but maybe you could have someone
design something RAM based. How much memory do you need?

--Mac

 

[Rene Tschaggelar]

I have a device which uses a Compact Flash format NAND Flash memory
card.
Does anyone know of a RAM based version of a Compact Flash card, with
the same interface and form factor.
I can't change the embedded S/W or H/W.
For security reasons the cards memory must be "lost" at power down. I
have no prior knowledge of when power will be lost. The system will
format the card at power-up.

You can build an interface that operates as the
Compactflash card but has RAM. The cost for a
similar amount of RAM will be rather high though.

Rene

 

[[email protected]]

I realize that on the surface that it is a nonsensical request but if
you knew what the owner of the code wanted to make such a "simple"
change you would be looking for a H/W fix also.

The original system uses the CF for all of the right reasons, but a new
customer requires volatile non-volatile memory.

Anything over 32MB or so would be plenty.

My idea is to use an FPGA with an IDE core on the computer side and a
SDRAM controller on the memory side. This is probably not a trivial
undertaking either.

Scott