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Connector pinout: Secure Digital SD Card, Pin Out


Secure Digital [SD] is a flash based removable memory card. The card format may also be used other device functions in addition to data storage. Secure Digital uses a 9-Pin connector [1 rows of 9 pins]. A compatible card format is called Secure Digital I/O [SDIO].









pinnamedirectiondescriptioncolor
1DAT3/CS Data Line
2CMD/DI Cmd line
3VSS1Ground
4VddVoltage Supply [2.7v or 3.6v]
5ClockClock
6Vss2Ground
7DAT0/D0 Data Line 0
8DAT1/IRQ Data Line 1
9DAT2/NC Data Line 2