MMC

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MMC

(1) See Microsoft Management Console.

(2) (MultiMediaCard) A flash memory card for cellphones, PDAs and other handheld devices. Introduced in 1997 by the MultiMediaCard Association with 4MB of storage, capacity increased to 2GB in the mid-2000s. MMCs were superseded by SD Cards, but SD Card readers support both formats.

MMC Versions
Numerous versions of MMC were introduced, including the encrypted SecureMMC with licensing data in a tamper-proof section of the card. A one-time programmable (OTP) version was available, and a read-only (ROM-MMC) card was used in Palm PDAs. Three smaller MMCs also debuted (see chart below).

Embedded MMC (eMMC) and miCARD
eMMC is flash memory and an MMC controller in a BGA package for direct mounting on a circuit board. miCARD is a high-capacity MMC (up to 2TB) that plugs into a USB port and with an adapter into an MMC slot. In 2008, eMMC and miCARD were turned over to the JEDEC division of EIA.


MultiMediaCards Vs. SD Cards
MMCs look like SD Cards; however, the thicker SD Cards (2.1mm vs. 1.4) have two more pins. MMCs can be read in SD Card readers, and dual-format SD/MMC readers (bottom) accept both. See SD Card.


MultiMediaCards Vs. SD Cards
MMCs look like SD Cards; however, the thicker SD Cards (2.1mm vs. 1.4) have two more pins. MMCs can be read in SD Card readers, and dual-format SD/MMC readers (bottom) accept both. See SD Card.


MultiMediaCards Vs. SD Cards
MMCs look like SD Cards; however, the thicker SD Cards (2.1mm vs. 1.4) have two more pins. MMCs can be read in SD Card readers, and dual-format SD/MMC readers (bottom) accept both. See SD Card.







MMC Vs. Reduced-Size MMC (RS-MMC)
RS-MMC, Dual-Voltage RS-MMCs (DV RS-MMCs) and MMCmobile cards can be used in full-size MMC slots with an adapter (see below). See SD Card.





                      Data   Size             TransferMMC TYPE  (mm)     Voltage  (Mhz)

  MMC        32x24x1.4  Hi        20
  MMC+       32x24x1.4  Hi        26/52

  RS-MMC     18x24x1.4  Hi        20
  DV RS-MMC  18x24x1.4  Lo/Hi     20
  MMCmobile  18x24x1.4  Lo/Hi     20

  MMCmicro   14x12x1.1  Lo/Hi
  miCARD     21x12x1.95 Lo/Hi/5v
  eMMC       BGA chip   Lo/Hi

  Lo=1.7 to 1.95v    Hi=2.7 to 3.6v
References in periodicals archive ?
Consumers can also provide emergency access to their health records with a MiCARD video device - a credit card size wallet card that displays emergency health information downloaded from NoMoreClipboard.
com today announced at the 2007 Business Forum for America's Health Insurance Plans a joint venture with MiCARD, Inc.
MiCARD makes critical health information readily accessible in the event of an emergency for individuals with chronic disease, those living in areas prone to natural disasters, "snowbirds" and other at-risk or highly-mobile consumers.
TAIPEI, Taiwan -- Pretec, the pioneer of the world's smallest USB Flash Drive, has now released their new product "S-Diamond," which is the 1st in the world to implement miCARD, a new flash memory card standard from MMC Association capable of supporting both USB and SD/MMC specifications.
95mm, miCard is the smallest USB flash drive in the world, with an area 40% smaller than miniSD (volume is about 18% smaller than miniSD).
When used in portable devices such as cameras, smart phones and PDAs, miCARD takes advantage of the low power consumption and high performance characteristics of the MMC interface.