SD&MMC Card Module Double Side
This SD/MMC card double side breakout, is allowed you to breakout the mircSD/SD/MMC socket to a standard 2.54mm-pin header. We used 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.
Note:If you use 3.3V power supply, please switch to 3.3V side.
Dimensions: 31 x 45 mm
Pin definition and Rating
|SCK||1||CMOS input with weak internal pull-up||Serial Clock|
|MISO||2||CMOS output,tri-stable with weak internal pull-up||Serial data Out|
|MOSI||3||CMOS input with weak internal pull-up||Serial data in|
|CS||4||CMOS output,tri-stable with weak internal pull-up||Chip Select|
|VCC||5||VCC||Integrated 5V(+)supply with on-chip linear regulator output within 3-5V|
Before the begin, you need a SD card memory, and formatted to FAT16(recommend) or FAT32. And you can get the SD Card from our store.
There are two Arduino library for test these SD Card module. One is the SD library allows for reading from and writing to SD cards, e.g. on the Arduino Ethernet Shield. It is built on sdfatlib by William Greiman. The library supports FAT16 and FAT32 file systems on standard SD cards and SDHC cards. It only supports one open file at a time and only uses short 8.3 file names.
The other library supports FAT16 formatted SD cards up to 2GB in size. 4GB FAT16 formatted SD cards might work, but is untested. Long filenames are not supported. Keep you filenames compliant with the old 8.3 standard. It called TinyFAT (Arduino SD Library)
There we used TinyFAT for testing White SD card module. The demo will create a textfile, and fill it with 1MB of text. The file will be named ‘BIGFILE.TXT’. If the file already exists it will first be deleted.
SD card must be connected to the SPI port of your Arduino. he IO connect to Arduino as below:
3V3 – 3.3V , GND – GND, CS – D10(SS), MOSI – D11, MISO – D12, CLK – D13
Includes important code snippet. Demo code like :
The result as blow:
If you have questions or other better design ideas,
|v1.2||Initial public release||date|
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