Table 2 SD/SDHC card pin details
Pin No. | Name | Function in SD mode | Function in SPI mode |
|---|---|---|---|
1 | DAT3/(\(\bar {CS}\)) | Data line 3 | Chip select/slave select (\(\bar {SS}\)) |
2 | CMD/DI | Command line | MOSI |
3 | Vss1 | Ground | Ground |
4 | VDD | Supply voltage | Supply voltage |
5 | Clock | Clock | Clock (SCLK) |
6 | Vss2 | Ground | Ground |
7 | DAT0/DO | Data line 0 | MISO |
8 | DAT1/IRQ | Data line 1 | Unused/IRQ |
9 | Dat2/NC | Data line 2 | Unused |