What is the MMC card and what can it be used for?
If you dont know, then this post from MiniTool is what you need.
This post introduces the definition and several variants of the MMC card.
So you could choose which MMC card to buy.
There are a large number of storage devices that you could use, such asM.2 SSDandDRAM memory.
The Definition of MMC Card
What is the MMC card?
It is short for MultiMediaCard, which is a memory card standard used for solid-state storage.
MMC was launched by SanDisk and Siemens AG in 1997.
It is based on a surface-contact low-pin-count serial interface using a single memory stack substrate assembly.
Both products were initially released using SanDisk NOR-based flash technology.
The dimensions of the MMC card is 24 mm x 32 mm x 1.4 mm.
MMC can be used in many devices that can use secure digital (SD) cards.
Currently, the maximum capacity of RS-MMC is 2 GB.
The modern continuation of RS-MMC is often calledMiniDrive(MD-MMC).
MiniDrive is usually a microSD card adapter in the RS-MMC form factor.
Version 4.x full-size and reduced-size cards can be sold as MMCplus and MMCmobile, respectively.
Therefore, a firmware/software update is needed to take advantage of these capabilities in the SD reader.
MMCmicro
MMCmicro is a micro-size version of the MMC card.
It measures 14mm x 12mm x 1.1mm, which is smaller and thinner than RS-MMC.
Its predecessor was the S-Card when it was launched by Samsung on December 13, 2004.
MMCmicro looks very similar to microSD, but both formats are physically incompatible and have incompatible pin assignments.
Its theoretical maximum size is 2048 GB (2 TB).
The card is made up of two detachable parts, much like a microSD card with an SD adapter.
The small memory card can be installed directly in the USB port.
Now only one manufacturer (Pretec) has produced cards in this format.
eMMC is available in 100, 153, 169 ball packages and is based on an 8-bit parallel interface.
eMMC does not support the SPI-bus protocol.
