I want to have a mini SD card reader that can be directly powered with 3.3 V.
Most of then look like this. They have a regulator that convert the 5 v to 3.3 v
I found this module. Do you know it ? It seems that there is no regulator. The connector has 6 pin that leads to think it is a SPI interface but there is no other view of this module so I only expect it is a SPI interface.
Have you more information about that ?
Thank you for replying.