Editing MultiMediaCard (section)

== History ==
{{multiple image
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 | image1 = Four MMC cards front.jpg
 | alt1 = Front of four different MMC cards: MMC, RS-MMC, MMCplus, MMCmobile, and metal extender
 | caption1 = Top of four types of MMC cards (clockwise from left): MMC, RS-MMC, MMCplus, MMCmobile, metal extender
 | image2 = 01fourcardsrev.curve.jpg
 | alt2 = Back of four different MMC cards (same cards as above)
 | caption2 = Bottom of the same four cards
}}

The latest version of the eMMC standard ([https://www.jedec.org/standards-documents/docs/jesd84-b51 JESD84-B51]) by JEDEC is version 5.1A, released January 2019, with speeds (250&nbsp;MB/s read, 125&nbsp;MB/s write) rivaling discrete [[Serial ATA|SATA]]-based SSDs (500&nbsp;MB/s).<ref>{{cite web |title=e.MMC v5.1 |url=http://www.jedec.org/standards-documents/technology-focus-areas/flash-memory-ssds-ufs-emmc/e-mmc |access-date=2015-08-21 |publisher=JEDEC}}</ref>
[[File:MMC card vs SDHC card undersides angle.jpg|thumb|right|Undersides of an MMC (left) and SD card (right) showing the differences between the two formats]]

As of 23 September 2008, the [[MultimediaCard Association]] (MMCA) turned over all MMC specifications to the [[JEDEC|JEDEC organization]] including embedded MMC (eMMC), SecureMMC, and miCARD assets.<ref>{{Cite web |title=MultiMediaCard Association Merges with JEDEC {{!}} JEDEC |url=https://www.jedec.org/news/pressreleases/multimediacard-association-merges-jedec |access-date=2022-10-29 |website=www.jedec.org}}</ref> JEDEC is an organization devoted to standards for the solid-state industry.

The latest eMMC specifications can be requested from JEDEC, free-of-charge for JEDEC members.<ref>{{Cite web |title=Standards & Documents Search {{!}} JEDEC |url=https://www.jedec.org/document_search?search_api_views_fulltext=jesd84-b51 |access-date=2022-10-29 |website=www.jedec.org}}</ref> Older versions of the standard are freely available, but some optional enhancements to the standard such as MiCard and SecureMMC specifications, must be purchased separately. 

While there is no royalty charged for devices to host an MMC or eMMC, a royalty may be necessary in order to manufacture the cards themselves.

A highly detailed datasheet<ref>{{cite web |url=http://html.alldatasheet.com/html-pdf/141187/SAMSUNG/MC2GH512NMCA-2SA00/305/1/MC2GH512NMCA-2SA00.html |title=MC2GH512NMCA-2SA00 datasheet(1/102 Pages) SAMSUNG &#124; SAMSUNG MultiMediaCard |website=Html.AllDatasheet.com |date=2005-09-22 |access-date=2013-11-13}}</ref> that contains essential information for writing an MMC host driver is available online.