A mini Sd card reader that can be directly powered with 3.3 v

Other Hardware Storage
1

Hello everybody,

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.

Sincerely.

Pierre

2

The first link looks like it has voltage converter for everything with it but hard to tell for sure.

The second just has two capacitors for power filter. And a 4-resistor array 10kOhm used as pull up to Vcc. Many have just 4 separate resistors. Anyway that one has no voltage regulators and needs to receive 3.3V. Be careful many have voltage regulator only for Vcc but not all the pins.