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I'm using STM32F44VET6 controller(using cubemx code configurator), I need to interface a 64GB SD card,and this controller has SDIO pheripheral also

But I'm confused how to choose interface type SPI or SDIO because memory size is high (64GB)

Please suggest me which interface i have to use to get better speed and accuracy to read and write?

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    \$\begingroup\$ sdio is faster but requires more signals \$\endgroup\$ – Marko Buršič Jul 31 at 6:15
  • \$\begingroup\$ A flash based MCU is a bit of an odd choice for dealing with such a larger storage volume if you want speed; what are you actually trying to do? \$\endgroup\$ – Chris Stratton Jul 31 at 6:26
  • \$\begingroup\$ we are developing control board for 3LCD projector ,SD card is used to store videos,images and files \$\endgroup\$ – aryan Jul 31 at 6:36
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    \$\begingroup\$ @aryan and what's going to decode that video? \$\endgroup\$ – Marcus Müller Jul 31 at 7:04
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SPI has much less bandwidth so use the STM32 SDIO peripheral to provide faster transfer rates.

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