Which SPI mode are SD Cards? 0,1,2,3

blueroomelectronics

Well-Known Member

• Jan 13, 2011

• #1

I'm pairing up a DS1390/1/4 RTCC and want to use one that's mode compatible.

 

Sceadwian

Banned

• Jan 13, 2011

• #2

SD cards can be accessed in five modes, only ONE of them is compatible with SPI

SPI is OPTIONAL on micro SD cards so it depends on the card you're interfacing to. Wiki says it all in.
Secure Digital - Wikipedia, the free encyclopedia

 

DirtyLude

Well-Known Member

• Jan 13, 2011

• #3

You can probably get more hits googling it if you look for 'polarity' and 'phase' settings rather than Mode.

Polarity and Phase are both 0, so mode 0.

 

blueroomelectronics

Well-Known Member

• Jan 13, 2011

• #4

Mode 0 seems right, that means a DS1390