SDIO of STM32F411CC support SDXC? (more than 32g)

[jjpark78_superman]

Hi.

i am a newbee here.

i want to know STM32F411CC has sdio, does it support SDXC ?

i need to use more than 32g sdcards. (example 64, 128, 256, 512g)

if STM32F411CC only support SD 2.0 (SDHC max capacity 32g),

SPI will support access more than 32g ??

regards.

[Imen.D]

Hello @jjpark78_superman​ and welcome to the STM32 Community =)

STM32F4 supports the SD version v2.0 according to the SDIO specification, with max capacity 32 GB.

The data transfer for SDIO is up to 50 MHz for the 8 bit mode.

I advise you to refer to the RM0383 and STM32F411xC datasheet to check the SDIO main features and the "Dynamic characteristics: SD / MMC characteristics" table.

Hope my answer helped you!

When your question is answered, please close this topic by choosing "Select as Best".

Imen

[Tesla DeLorean · Accepted solution]

Yes, can readily support capacities of 400GB or more.

The command set for SDHC/SDXC is the same, just not going to be able to operate in modes/speeds exceeding the hardware's capability.

For large media you'll want to use EXFAT, and a newer version of FatFs than ST ships.

Should be able to access via SPI