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Which flash card interface to design in?

T

Tony

Jan 1, 1970
0
Hi,

There are a lot of standards around now for small, cheap flash memory
modules, and sockets seem to be readily available for most of them. I
need to incorporate the option for an arbitrary amount of extra flash
in a new design, so I'd like to include a socket for one of these.

But which is the most likely to still be supported in a few years
time? Which one is the easiest to interface to?

Answers, hints, links all welcome.

Tony (remove the "_" to reply by email)
 
A

Anders F

Jan 1, 1970
0
Tony said:
Hi,

There are a lot of standards around now for small, cheap flash memory
modules, and sockets seem to be readily available for most of them. I
need to incorporate the option for an arbitrary amount of extra flash
in a new design, so I'd like to include a socket for one of these.
But which is the most likely to still be supported in a few years
time?

CF and SD will be around for some time as they are both used extensively
everywhere =). CF has traditionally been cheaper per MB (probably because
the controller enables use of non-perfect flash parts) and is definitely
available in much larger capacities. However, the SD is smaller and the
sockets cheaper.

/A
 
S

sPoNiX

Jan 1, 1970
0
CF and SD will be around for some time as they are both used extensively
everywhere =). CF has traditionally been cheaper per MB (probably because
the controller enables use of non-perfect flash parts) and is definitely
available in much larger capacities. However, the SD is smaller and the
sockets cheaper.

CF has the advantage of an IDE compatible interface.

sPoNiX
 
T

Tony

Jan 1, 1970
0
Thanks - also found some info at
http://www.eprovided.com/memory-cards/digital-camera-memory.html
and found Electus Distribution have a few sockets at decent prices.
Interfacing looks easy enough too.

CF and SD will be around for some time as they are both used extensively
everywhere =). CF has traditionally been cheaper per MB (probably because
the controller enables use of non-perfect flash parts) and is definitely
available in much larger capacities. However, the SD is smaller and the
sockets cheaper.

/A

Tony (remove the "_" to reply by email)
 
R

Rob

Jan 1, 1970
0
Tony said:
Hi,

There are a lot of standards around now for small, cheap flash memory
modules, and sockets seem to be readily available for most of them. I
need to incorporate the option for an arbitrary amount of extra flash
in a new design, so I'd like to include a socket for one of these.

But which is the most likely to still be supported in a few years
time? Which one is the easiest to interface to?

Answers, hints, links all welcome.

Tony (remove the "_" to reply by email)


I've just started looking at similar issues. the Multimedia card seems to
have the simplest interface 7 pins (2 for pwr/gnd, Din, Dout & a mode select
type input for SDI/MMC mode). The simpler MMC sockets also seem to be
(understandably) quite a bit cheaper than the CF sockets - AU$4 @ Farnell.

I found some useful background info in the archives at www.piclist.com

I believe there is a smaller variant of the MMC as well which may be around
for longer. I don't know how long the future of the standard MMC card is
likely to be - anyone have any ideas??

r.
 
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