Micro SD card module schematics

[rajeshnadir]

Hi,

I want to make my own pcb, which includes an SD card interface. I have this module, I want to integrate this into the pcb: ESP32: Guide for MicroSD Card Module Arduino | Random Nerd Tutorials

But I can't find any proper document about it's schematics. Do you know, what the internal wiring of this module looks like?

[MaximoEsfuerzo]

For 3.3V devices, connect directly according to the SPI pinout of the socket you use

Add a 100nF decoupling capacitor between Vcc and GND.

In the image VSSx = GND, VDD = Vcc

[srnet]

A 10K pullup resistor on the CS pin is a good idea, if your using other SPI devices on the same SPI bus as the SD card.