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MSP430F5519: Micro SD Card Connection - DM3D-SF

Nurdan Mert
Prodigy 80 points
Part Number: MSP430F5519

Hello,
I want to store data with micro sd card in my circuit, but I couldn't find a specific sd card connection image for MSP430. I adapted my own micro sd card according to the only image I could find. Can it work smoothly as a result of the connection I made?

Here is my SD card connection:
CLK -> SCLK
DAT0 -> MISO + 50K TO 3V3
DAT1 -> 50K TO 3V3
DAT2 -> 50K TO 3V3
CD/DAT3 -> CS + 50K TO 3V3
CMD -> MOSI + 50K TO 3V3
VDD -> 3V3
SWA AND SWB -> NULL
SHIELD -> NULL
VSS ->GND

I would be very grateful for your answers, thank you.

  • 0
    Guru 22885 points

    That should work. But you don't need all of those resistors. The signals driven by the MSP430 (SS, MOSI, SCK) certainly do not need them as they will be driven high or low. The unused DAT pads don't need them either. Just MISO - DAT0. Maybe.

    The resistor is a holdover from the MMC card era when it was expected that more than one card would be on the bus.

  • 0 in reply to David Schultz
    Prodigy 80 points

    CLK -> SCLK
    DAT0 -> MISO + 50K TO 3V3
    DAT1 -> 3V3
    DAT2 -> 3V3
    CD/DAT3 -> CS + 50K TO 3V3
    CMD -> MOSI + 50K TO 3V3
    VDD -> 3V3
    SWA AND SWB -> NULL
    SHIELD -> NULL
    VSS ->GND

    Is this okay or not?

  • 0
    TI__Mastermind 22805 points

    at the same time, please format the SD card on the FAT16 or FAT32 file format. Thanks!

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