Author Topic: Micro SD card slot specs  (Read 2792 times)

tkbay

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Micro SD card slot specs
« on: January 11, 2014, 03:29:32 pm »
Hi all -

What kinds of cards are compatible with the Micro SD card slot?  SD/SDHC/SDXC?
Are there any memory size or speed class rating limits?

Thanks

digistump

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Re: Micro SD card slot specs
« Reply #1 on: January 11, 2014, 04:49:21 pm »
Any card that can work in SPI mode (backwards compatible MMC mode) - which rarely stated on the card - but generally most cards do. All SD should - SDHC/SDXC don't have to but more often than not seem to.

Memory size support would be a function of the library you are using - I imagine most support up to 32gb minimum.

Speed doesn't play much of a role since we are using the SPI protocol to access them

erix

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Re: Micro SD card slot specs
« Reply #2 on: January 19, 2014, 10:54:46 am »
Hi,

I have an additionnal question about the cards we can use in the SD card slot.
what kind of format must we use? fat etc etc?
Thanks in advance
Regards
Erix

digistump

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Re: Micro SD card slot specs
« Reply #3 on: January 19, 2014, 10:02:45 pm »
That is completely up to the library you are using - see the arduino reference for the built in library here: http://arduino.cc/en/Reference/SD