Difference between hardware SDIO and SPI for SD interface?

[hg-chen]

Posted on July 17, 2008 at 19:18

Difference between hardware SDIO and SPI for SD interface?

[hg-chen]

Posted on May 17, 2011 at 12:39

STM32 with 256K flash or above gets hardware SDIO , while 128K or below

using SPI to do SD access! major difference between these 2 access? maximum SD capacity access different? possible compatible issue? support future SD card with larger capacity?

[16-32micros]

Posted on May 17, 2011 at 12:39

Hi Kuni,

For SDIO, STM32 High density is fully compatible with SDIO V2.0 and V1.1 and also supports SDHC with larger capacity > 4GBytes and more. Regards, STOne-32.