SD CARD SPI Schematic

[leomecma]

sd card schematic

Anyone has an schematic for interface a SDCARD to a 3V3 microcontroller. I found some, and some people use pullup resistors, others not. Is it necessary? If is true, in what pin?

thk,

leomecma

 

[pat_fr]

sd card interface schematic

hi,

**broken link removed**

Is it necessary?

I think not

 

[scarecrow_here]

sd card spi

Check Microchip website. There are many 3V3 MCUs support SPI interface. There is three wire connection between the MCU and SD card and no resisters needed.

 

[chandravel]

sd card schematics

hi to all,
Pull up resistance is must in spi communication. So u put 10k in the Data in and data out Line
Thanks
chandravel