Hi Martin, The MSP430FR5994 LaunchPad has a microSD card port, although this device is not ARM-based. See Section 2.2.5.1 in the User's Guide for more details. Also, I've seen where the ARM-based MSP432 has been used with an SD card. While the link below is not supported by TI, this software was allegedly tested on a 32MB card and should be a good reference. After reading a little about the differences between SD 2.0 and SD 3.0, there seems to be two key changes (ignoring larger capacity and higher speed): "The format of the Card-Specific Data (CSD) register changed between version 1 (SDSC) and version 2.0 (which defines SDHC and SDXC)", found on Wikipedia here "The file system used on the MMC/SDC is FAT. The MMC/SDC specifications define the FAT type as: FAT12 for 64MB and smaller, FAT16 for 128MB to 2GB, FAT32 for 4GB to 32GB and exFAT for 64GB to 2TB", found here Assuming these changes are implemented in software correctly, this may work. However, I'd recommend spending more time researching these differences. Here are some additional resources on the MSP430 side that should be helpful. Regards, James MSP Customer Applications
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