Is MMC better than Compact Flash Type II ???

[arunb]

Hi,

I would like to store large amounts of data( to be used in a datalogger) ,several MBs. I found that compact flash could be used , but the number of pins in the card is quite a lot.

But an MMC card has lesser number of pins. So do you think using a MMC card is better than compact flash , also please advise on what type of MMC (if there is such a thing) card I should use. Also is there any connectors available for this ??

thanks
arunb

[Bart]

Hello Arunb,

You are not the first who wants to store a lot of data (so do I)
MMC seems to me the most simple in connection and in code.
Search the forum for MMC and you will find a lot of examples (even code)
Connector are available and if you can't directly find one, you can test with an old floppy drive connector.
(See also a topic from me : http://www.ccsinfo.com/forum/viewtopic.php?t=24909 )

It becomes harder when you need those logged/saved Mb's on a PC ...
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[arunb]

Hello Bart,

Thank you for the reply.

Is there only one kind of MMC, which has 7 pins ??

Also is a floppy disk connector required for connecting the card ??

Please also advise where I can get the specs for the card ??

thanks
arunb

[ckielstra]

[arunb]

Hi,

I have bought a 128 MB card, it contains 8 pins only. I found a similar card (256 MB) but this had around 12 pins, 8 pins were arranged in one row and 4 on a second row, apart from this it was similar in size to the 128 MB one, the dealer told me it was compatible with Nokia phones.

The specs posted by ckielstra showed only 8 pins, do you think the second card (256 MB) is compatible with the first one. ?? also how do I determine what pins are not required ??

Kindly advise what I should do

Thanks
arunb

[ckielstra]