can you explain what is emmc ?
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Yongitechz
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" EMMC "
The MultiMediaCard (MMC) is a memory card standard used for solid-state storage. Unveiled in 1997 by SanDisk and Siemens AG,[1] it is based on Toshiba's NAND-based flash memory, and is therefore much smaller than earlier systems based on Intel NOR-based memory such as CompactFlash. MMC is about the size of a postage stamp: 24 mm × 32 mm × 1.4 mm. MMC originally used a 1-bit serial interface, but newer versions of the specification allow transfers of 4 or 8 bits at a time. MMC can be used in most devices that can use SD cards.
Typically, a MMC is used as a storage medium for a portable device, in a form that can easily be removed for access by a PC. For example, a digital camera would use a MMC for storing image files. With a MMC reader (typically a small box that connects via USB or some other serial connection, although some can be found integrated into the computer itself), a user could copy the pictures taken with the digital camera off to his or her computer. Modern computers, both laptops and desktops, often have SD slots, which can additionally read MMCs if the operating system drivers can.
MMCs are available in sizes up to and including 128 GB. They are used in almost every context in which memory cards are used, like cellular phones, digital audio players, digital cameras and PDAs. Since the introduction of Secure Digital (SD) cards, few companies build MMC slots into their devices (an exception is some mobile devices like the Nokia 9300 communicator in 2004, where the smaller size of the MMC is a benefit), but the slightly thinner, pin-compatible MMCs can be used in almost any device that can use SD cards if the software/firmware on the device is capable.
While few companies build MMC slots into devices today (SD cards are more common), the embedded card (eMMC) is still widely used in the industry as a primary means of integrated storage in portable devices. It provides a low-cost flash memory system with a built-in controller that can reside inside an Android or Windows phone or low-cost PC and appear to its host as a bootable device, in lieu of a more expensive form of solid-state storage, like the traditional solid-state drive. While drives are generally better than cards, they cost more and take up more space...
ito pa!
The eMMC (embedded MMC[7]) architecture puts the MMC components (flash memory plus controller) into a small ball grid array (BGA) IC package for use in circuit boards as an embedded non-volatile memory system. This is noticeably different from other versions of MMC as this is not a user-removable card, but rather a permanent attachment to the circuit board. eMMC also does not support the SPI-bus protocol.
Almost all mobile phones and tablets use this form of flash for main storage. The latest version of the eMMC standard (JESD84-B51) by JEDEC is version 5.1 released February 2015, with speeds rivaling discrete SATA-based SSDs (400 MB/s).[8
yan lng nakikita ko8->
The MultiMediaCard (MMC) is a memory card standard used for solid-state storage. Unveiled in 1997 by SanDisk and Siemens AG,[1] it is based on Toshiba's NAND-based flash memory, and is therefore much smaller than earlier systems based on Intel NOR-based memory such as CompactFlash. MMC is about the size of a postage stamp: 24 mm × 32 mm × 1.4 mm. MMC originally used a 1-bit serial interface, but newer versions of the specification allow transfers of 4 or 8 bits at a time. MMC can be used in most devices that can use SD cards.
Typically, a MMC is used as a storage medium for a portable device, in a form that can easily be removed for access by a PC. For example, a digital camera would use a MMC for storing image files. With a MMC reader (typically a small box that connects via USB or some other serial connection, although some can be found integrated into the computer itself), a user could copy the pictures taken with the digital camera off to his or her computer. Modern computers, both laptops and desktops, often have SD slots, which can additionally read MMCs if the operating system drivers can.
MMCs are available in sizes up to and including 128 GB. They are used in almost every context in which memory cards are used, like cellular phones, digital audio players, digital cameras and PDAs. Since the introduction of Secure Digital (SD) cards, few companies build MMC slots into their devices (an exception is some mobile devices like the Nokia 9300 communicator in 2004, where the smaller size of the MMC is a benefit), but the slightly thinner, pin-compatible MMCs can be used in almost any device that can use SD cards if the software/firmware on the device is capable.
While few companies build MMC slots into devices today (SD cards are more common), the embedded card (eMMC) is still widely used in the industry as a primary means of integrated storage in portable devices. It provides a low-cost flash memory system with a built-in controller that can reside inside an Android or Windows phone or low-cost PC and appear to its host as a bootable device, in lieu of a more expensive form of solid-state storage, like the traditional solid-state drive. While drives are generally better than cards, they cost more and take up more space...
ito pa!
The eMMC (embedded MMC[7]) architecture puts the MMC components (flash memory plus controller) into a small ball grid array (BGA) IC package for use in circuit boards as an embedded non-volatile memory system. This is noticeably different from other versions of MMC as this is not a user-removable card, but rather a permanent attachment to the circuit board. eMMC also does not support the SPI-bus protocol.
Almost all mobile phones and tablets use this form of flash for main storage. The latest version of the eMMC standard (JESD84-B51) by JEDEC is version 5.1 released February 2015, with speeds rivaling discrete SATA-based SSDs (400 MB/s).[8
yan lng nakikita ko8->
froi
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Not all solid-state storage is as fast as an SSD. “eMMC†is the
kind of flash storage you’ll find in cheap tablets and laptops.
It’s slower and cheaper than a traditional SSD you’d find in more expensive computers.
eMMC storage has a lot in common with SD cards.
It’s all flash memory, but — just as an SD card
wouldn’t be as fast as a speedy solid-state drive — eMMC storage
can’t compete with an SSD, either.
ORIG LINK...
trisha_mhae
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ang ibig sabihin po ba ang "flash ic" na ginamit sa unang batch ng mga mobile device ay syang "emmc" na tinatawag natin at kasalukuyang ginagamit sa mga gadget ngayon..?
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