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The eMMC architecture for embedded memory devices contains not only a data storage element (such as NAND flash memory), but also the controller for the storage element integrated on the same silicon die. Flash memory is often used for data storage, and is commonly controlled by a dedicated controller that operates under the application’s CPU and supervises data reads and writes. However, rapidly increasing memory densities are resulting in memory chips with ever-increasing capacities, making it difficult to keep the controller and memory on separate dies. The eMMC architecture allows devices and applications to maintain the required data rates and throughputs for high-density chips. Along with the abilities to store high-resolution video and provide extended data storage capabilities, this results in reduced development time and easier integration of the memory block in the overall system, and a much shorter time-to-market for the end product.
The eMMC solution consists of three components – the MMC (multimedia card) interface, the flash memory, and the flash memory controller – and is offered in the industry-standard BGA package. eMMC is capable of operating at significantly high interface speeds, and provides the designer the flexibility to select the data transfer bus widths and interface voltages. eMMC is extensively used for platforms that require high levels of performance in very small form factors, such as mobile handsets, and smartphones. Simultaneously, the eMMC architecture is also evolving into a new architecture called moviMCP. This architecture eliminates the need to develop interface software for all types of NAND memory by integrating the embedded controller within the memory chip, and providing an easy-to-use memory solutions package for high-speed data transmissions by devices such as mobile phones. moviMCP also stacks several memory functions vertically, eliminating the need for a memory expansion slot, and results in a very small footprint for the memory devices. Samsung has the widest range of high performance memory devices based on the eMMC architecture. Worldwide, Samsung eMMC devices are preferred by a majority of system designers, integrators, and OEMs for their flexible configurability, high operating speeds and data transfer bandwidths, low power consumption, and small form factors.
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Flash memory is nonvolatile, solid state semiconductor storage media that retains stored data without the need for any external power supply. This document describes the High-density Packaging Technology for Flash memory products, which stacks individual memory chips on top of one another within a single package with a low-profile, enabling the production of flash memory devices with the highest densities and storage capacities.
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