Raspberry Pi Pinout


  • GPIO (General Purpose IO)
  • SPI (Serial Peripheral Interface)
  • I2C (Inter-integrated Circuit)
  • UART (Universal Asyncronous Receiver/Transmitter)
  • Ground
  • 5v (Power)
  • 3v (Power)

SDIO - SD Card Interface

SDIO is the SD host/eMMC interface on the Raspberry Pi. SD host signals are normally used for the microSD slot.

These pins are "SD host" on Alt0 and "eMMC" on Alt3.


  • Uses 6 GPIO pins