However, I now have a situation that I want to power it from 5v, but keep the SPI logic level at 3.3v for the Due.
It is not quite clear to me how the internal logic level shifters are arranged, but I would suspect that the 5v Vin would set the logic level to 5v for its SPI output? Or is it smart enough to know I have a 3.3v board connected?
Adafruit have designed it so regardless of the controller providing 3.3 or 5V the card always receives 3V.
On the product page of you head over to the product tutorial link half-way down you can check out the schematic.
It works much the same as the Makerverse module
Thank you, I understand that the SD card is always looked after in terms of seeing 3.3v, but I am worried about the Arduino Due inadvertently receiving 5v…
I will look closely at the schematic and try and understand!
