his a SD or MMC card break out module.You can connect to your MCU board by SPI bus easily. It is allowed you to breakout the SD/MMC socket to a standard 2.54mm-pin header. We used 2×8 double pin compatible to user various demand, and with SPI Mode interface.
The module can work with 5V or 3.3V power supply, and both 5V/3.3V IO operation level. It can be controlled directly by a wide range of microcontrollers. Perfect for breadboarding and the likes. Board comes fully assembled and tested as shown.
Dimensions: 30 x 47 mm.
|3.3v||2||3.3v||Integrated 3.3V(+)supply with on-chip linear regulator output within 3-5V|
|VCC||3||VCC||Integrated 5V(+)supply with on-chip linear regulator output within 3-5V|
|CS||4||CMOS output,tri-stable with weak internal pull-up||Chip Select|
|MOSI||5||CMOS input with weak internal pull-up||Serial data in|
|SCK||6||CMOS input with weak internal pull-up||Serial Clock|
|MISO||7||CMOS output,tri-stable with weak internal pull-up||Serial data Out|