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The world's first 128-storey 4D NAND

SK hynix today announced that it has developed and begun mass production of the world's first 128-layer 1Tb TLC (three-layer unit) 4D NAND flash, just eight months after announcing the 96-layer 4D NAND.

Currently, 128-tier 1 Tb NAND chips offer the industry's highest vertical stack, with more than 36 billion NAND cells, each containing three chips. To achieve this goal, SK hynix has developed its own 4D NAND technology using innovative technologies such as "ultra-uniform vertical etching technology", "high reliability multi-layer thin film battery formation technology" and ultra-fast low-power circuit design
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SK hynix will begin selling 128-layer 4D NAND flash memory in the second half of this year, while continuing to roll out various solutions. With its four-plane architecture in a single chip, the product achieves data transmission rates of 1,400 Mbps (megabits per second) at 1.2v, enabling high-performance and low-power mobile solutions and enterprise-class SSDS. SK hynix plans to develop the next generation of UFS 3.1 for major flagship smartphone customers in the first half of next year. Using 128 layers of 1 terabyte of NAND flash memory, the number of NAND chips required for 1 terabyte (terabyte) products (currently the maximum capacity of smartphones) will be reduced by half compared to 512 Gb of NAND. It will provide customers with mobile solutions that reduce power consumption by 20% in a 1mm thin package

Large capacity era

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