This is a ready to go module that utilizes the DOSonCHIP FAT16/32 IC with accompanying micro-SD socket. Excellent evaluation board for the DOSonCHIP™ silicon or for file storage, simple datalogging, and high speed API datalogging! Uses a simple UART or SPI interface.  Low 5mA current consumption. Project description, more information and ordering can be found at https://www.sparkfun.com/products/8215 CD17B10 v2.0 Datasheet: http://www.sparkfun.com/datasheets/DevTools/FAT/DOSonCHIP_CD17B10_Datasheet2.0.pdf CD17B10 User's Guide: http://www.sparkfun.com/datasheets/DevTools/FAT/CD17B10_User_Guide_0v1.pdf DOSonCHIP-uSD Schematic: http://www.sparkfun.com/datasheets/DevTools/FAT/DOSonCHIP-uSD-v13.pdf DOSonCHIP Homepage: http://dosonchip.com/index.html DOSonCHIP-uSD Dimensional: http://www.sparkfun.com/datasheets/BreakoutBoards/DOSonCHIP-uSD-Dimensional.pdf