D flashdevices, available in 128Mb to 2Tb densities, are used to store data and code. Low-density D flash is ideal for applications like STBs, digital televisions (DTVs), and DSCs while high-density D flash is mostmonly used in data-heavy applications like SSDs, tablets, and USB drives. There is a continuous effort to reduce the cost/GB of D devices, so device life cycles tend to be shorter with more frequent process lithography shrinks. D requires a controller, either internal or external, and specific firmware for error code correction (ECC), bad block management, and wear leveling. There are two primary types of D: raw and managed. Raw uding single-level cell (SLC), multilevel cell (MLC), triple-level cell (TLC) and quad-level cell (QLC). Raw D requires external management but is the lowest cost/GB D rporates memory management into the package, simplifying the design-in process. See full list on Raw D provides the lowest cost per bit but requires an external host controller (not contained within the package) to perform all manage¬ment functions (e.g., ECC, FTL). See full list on Managed Dprovides simpler solutions and speeds time-to-market because the controller is embedded within the package to handle wear leveling, bad block management and ECC. See full list on A basic knowledge of the various kinds D Flash-based memory solutions available can help designers make informed decisions about which D Flash device to specify for a particular design. This article's general description of each of tD Flash options helps illustrate what makes them better suited for some applications than others. More technical information about each memory type can be found in the Products section of our Web site. References: 1. Open D Flash Interface See full list on
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