microSD Card Pinout, Datasheet
| Pin Name | In SD Mode | In SPI Mode |
|---|---|---|
| DAT2/X | Connector Dataline 2 | No use |
| DAT3/CS | Connector Data line 3 | Chip Select |
| CMD/DI | Command/ ResponseLine | Data Input |
| VDD/VDD | Powersupply (+3.3V) | Powersupply (+3.3V) |
| CLK/SCLK | Clock | Serial Clock |
| VSS/VSS | Ground | Ground |
| DATO/DO | Connector Dataline 0 | Data Out |
| DATI/X | Connector Dataline 1 | No use |
