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SD card#microSD

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+#REDIRECT [[SD card#microSD]]
-{{lowercase title}}
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-{{further|[[Secure Digital]]}}
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-{{Merge to|Secure Digital|discuss=Talk:Secure Digital#Merger proposal|date=January 2011}}
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-[[File:MSD68GB.jpg|thumb|250px|A generic 8 GB class 6 (6 MB/s) microSDHC card, shown on a US [[Dime (United States coin)|dime]] coin for reference]]
-[[File:SD Cards.svg|thumb|right|250px|An SD card, miniSD card, and microSD card]]
-'''microSD''' is a format for removable [[flash memory]] cards. SD is an abbreviation of [[Secure Digital]]. The cards are commonly used in cellular phones, as well as in some newer handheld [[GPS]] devices, [[portable media player]]s, [[digital audio player]]s, expandable [[USB flash memory drives]], [[Nintendo DS]] flashcards, and [[digital camera]]s.
-It is the smallest [[memory card]] available commercially; at 15 × 11 × 1&nbsp;mm (about the size of a [[nail (anatomy)|fingernail]]), it is less than one eighth (1/8) the size of a standard-sized [[SD card]].<ref>{{cite web|url=http://www.sdcard.org/developers/tech/microsd/ |title= microSD Card | publisher=SD Card Association |accessdate=2008-09-13}}</ref>  There are [[adapter (computing)|adapters]] which allow a microSD card to be used in devices intended for standard SD, [[miniSD]], [[Memory Stick Duo]] and even [[USB]]<!-- OCZ Trifecta --> cards. However, they are not universally compatible. Many microSD cards sold online and in stores are packaged with a standard SD adapter to use the card in devices that take standard SD but not microSD cards.
-TransFlash and microSD cards are the same (each can be used in devices made for the other), except that microSD adds support for [[Secure_Digital#Secure_Digital_Input_Output_.28SDIO.29|SDIO]] mode, enabling non-memory cards like Bluetooth, GPS, and [[Near Field Communication]] devices.<ref>{{citation | url = http://www.phonescoop.com/glossary/term.php?gid=179 | title = microSD definition | publisher = Phone Scoop}}</ref>
-A point of confusion can come from the difference in the microSD and the newer micro[[Secure Digital#SDHC|SDHC]] format. The SD and SDHC share a similar form factor, but not all devices are compatible with the newer high-capacity format. This is even true with devices that have been developed by [[SanDisk]] such as their e200 series of [[MP3 player]]s. Using 3rd party [[firmware]], however, SDHC reading capabilities can sometimes be possible.<ref>{{citation | url = http://www.rockbox.org/twiki/bin/view/Main/MajorChanges | publisher = Rockbox | title = change 2007-08-22: Added support for MicroSDHC cards on Sansa e200}}</ref>
-Older TransFlash cards are available in 16MB and 32MB format. microSD cards are currently available in capacities from 64 MB to 2 GB, while microSDHC cards are currently available in capacities from 256MB to 32 GB.  This is the largest microSD card yet, and the limit of the microSDHC technology as well. microSD cards with larger capacities will be in microSDXC format.
-==History==
-The microSD format was created by [[SanDisk]]. The concept was the brain child of the CTO of SanDisk and the CTO of Motorola, who believed current memory card formats were too large for phones.  It was originally called T-Flash, however just prior to product launch T-Mobile sent a cease and desist order to SanDisk claiming they own T- (anything) and the name was then changed to TransFlash.  After pressure from Toshiba and Panasonic, SanDisks' partners in the 3C licensing group of the SDA, SanDisk negotiated to have the new format become a standard administered by the SDA [[SD Card Association]]. Other flash card formats approved by the SDA include miniSD and standard SD card.
-The SDA announced the microSD format at CTIA Wireless 2005 on March 14, 2005, and approval of the final microSD specification was announced on July 13, 2005. At launch, the microSD format was available in capacities of 32, 64, and 128 MB. SanDisk introduced a 2 GB microSD card in July 2006, initially priced at $99 ([[United States dollar|USD]]). Since then, prices for flash memory devices have fallen dramatically. As of April 2009, the same 2 GB card could be found for as little as $12 (USD) at department stores, and as of May 2009 for as little as $6 (USD) at online electronics stores. In January 2010, a 16 GB microSD card class 2 cost about $40 (USD), and a 4 GB class 2 microSD card about $8 (USD).
-It is expected that the [[SDXC]] (up to 2 [[terabytes]] data) format will eventually be carried over to the MicroSD cards;{{Citation needed|date=May 2010}} a timeframe or announcement has not been made.
-==Power Consumption==
-The power consumption of microSD cards varies by manufacturer, but appears to be in the range of 66-330mW (20-100&nbsp;mA at a supply voltage of 3.3&nbsp;V). Specifications from TwinMos technologies list a maximum of 149mW (45&nbsp;mA) during transfer.<ref>http://www.twinmos.com.tw</ref>  Toshiba, on the other hand, lists 264-330mW (80-100&nbsp;mA).<ref>http://www.toshiba-memory.com/en/micro_sd_cards.html</ref>
-==See also==
-* [[Secure Digital]] (all SD card families)
-==References==
-{{Reflist}}
-{{Memory Cards}}
-{{DEFAULTSORT:Microsd}}
-[[Category:2005 introductions]]
-[[Category:Solid-state computer storage media]]
-[[Category:Computer storage devices]]
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