page_title: SD card
section_title: Interface
hierarchical_section_title: SD card / Technical details / Interface
caption_attribution_description: English: Digital Media SD Internals, 512MB. Updated using gimp and hugin: correct for barrel distorsion, removed the background and set it to transparent, removed remaining parts of background, cropped and adjusted levels.
context_page_description: Secure Digital, officially abbreviated as SD, is a proprietary non-volatile memory card format developed by the SD Association for use in portable devices.
  The standard was introduced in August 1999 by joint efforts between SanDisk, Panasonic and Toshiba as an improvement over MultiMediaCards, and has become the industry standard. The three companies formed SD-3C, LLC, a company that licenses and enforces intellectual property rights associated with SD memory cards and SD host and ancillary products.
  The companies also formed the SD Association, a non-profit organization, in January 2000 to promote and create SD Card standards. SDA today has about 1,000 member companies. The SDA uses several trademarked logos owned and licensed by SD-3C to enforce compliance with its specifications and assure users of compatibility.
caption: Inside a 512 MB SD card: NAND flash chip that holds the data (bottom) and SD controller (top)
exif: {}