MMC

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Related to MMCmobile: RS-MMC

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 MMCs were superseded by SD Cards, but SD Card readers support both formats.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 ?
New 2GB capacity miniSD and MMCmobile Flash Memory Cards have been introduced by Kingston Technology, a memory manufacturer, to support the increasing storage demands of mobile phones.
The first 1GB MMCmobile card is being sampled, along with 1GB and 2GB MMCplus cards, and all are said to be capable of transmitting data at 52MB/s, a speed up to 20 times faster than previous versions.
Con miras a la atencion a la creciente demanda de almacenamiento en dispositivos portatiles, como smartphones y telefonos celulares, Kingston anuncio la disponibilidad de nuevas capacidades de tarjeta de memoria flash en el formato Micro SD, Mini SD y MMCmobile.
KINGSTON LIBERO LAS tarjetas MMCmobile para telefonos y equipos digitales moviles, con un tamano mas pequeno y niveles de voltaje de operacion doble, lo que permite D ahorrar espacio y obtener mayor rendimiento de la bateria.
7Compatible memory cards include SD[TM] Memory Card, miniSD Card, SDHC[TM] Memory Card, miniSDHC[TM] Card, MultiMediaCard[R], MMCplus Card, MMCmobile Card, HC MMCplus Card, RS-MMC[TM], CompactFlash[R] Card, Microdrive[R], Memory Stick[R], Memory Stick[R] PRO[TM], Memory Stick[R] Duo[TM] and Memory Stick[R] PRO Duo[TM].