Mobile devices like smartphones and tablets use an eMMC as their primary storage, and they can increase this storage with a detachable Secure Digital card or microSD multimedia card.

1. What is Emmc?
NAND flash memory and a basic storage controller make up an embedded MultiMediaCard
(eMMC), a diminutive storage system. JEDEC and the MultiMediaCard Association created the
eMMC standard in 2006 for embedded flash memory applications. The technology is designed
to work with sensors that are connected to the Internet of Things (IoT), as well as portable
devices like cell phones and, more recently, wearable sensors. One integrated circuit (IC), which
is permanently incorporated into a device, houses both the controller and flash memory. Hence
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Mobile devices like smartphones and tablets use an eMMC as their primary storage, and they
can increase this storage with a detachable Secure Digital card or microSD multimedia card. In
the IoT, it serves as the only storage for incredibly small sensors. The newest eMMC
specification (version 5.1) permits a transfer rate of up to 400 megabytes per second (MBps),
which is comparable to a solid-state drive using a SATA connection. However, the connection to
the device's main board is parallel.
eMMC use cases include:
The mobile device sector, which employs the technology in smartphones, tablets, and laptops,
has been eMMC's main user. The Samsung 128 GB eMMC, utilised in thin notebook PCs, has
the highest capacity currently offered. The sensors included into IoT devices that gather data
and send it to a company or organisation have relied on smaller eMMC integrated circuits as the
IoT has gained popularity.
Additionally, as more cars have onboard entertainment or navigation systems, eMMCs are being
used more frequently in the automotive industry. Ruggedized eMMCs have been developed by
companies like SanDisk to withstand the environmental and stress demands of industrial and
automotive application. These, however, cost more than standard items.
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The main circuit board of the device for which it saves data is directly connected to the eMMC
IC through a parallel connection. The device CPU is relieved of the responsibility of handling
data storage by using an integrated controller in the eMMC, which handles that task instead.
This frees up the CPU, a slower and less powerful chip than those found in computers or
servers, for use in higher priority activities. When compared to a spinning disc, the complete
IC-based storage consumes less power when employing flash memory.
The modest footprint of eMMC, which is smaller than a conventional postage stamp, makes it
perfect for a wide range of electronic devices, such as smartphones, small computers, smart

2. TVs, wearable technologies, and smart home appliances. Because the storage is typically
soldered directly to the device's motherboard and is therefore neither detachable nor easily
relocated, the moniker "embedded" refers to this reality. NAND flash, the same technology used
in USB drives, SD cards, and solid-state drives, is what makes up eMMC storage.
Due to its small size, low power consumption, and numerous improved features, eMMC is
quickly being adopted in a wide range of embedded applications outside of consumer goods,
including Single Board Computers (SBC), robotics, medical devices, automotive, networking,
and building control devices.
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