January 31, 2020
Kioxia Corporation, the world leader in memory solutions, today announced that it has successfully developed its fifth-generation BiCS FLASH™ three-dimensional (3D) flash memory with a 112-layer vertically stacked structure. Kioxia plans to start shipping samples of the new device, which has a 512 gigabit (64 gigabytes) capacity with 3-bit-per-cell (triple-level cell, TLC) technology, for specific applications in the first quarter of calendar year 2020*1. The new device aims to fulfill ever-growing bit demands for a wide variety of applications, including traditional mobile devices, consumer and enterprise SSDs, emerging applications enabled by the new 5G networks, artificial intelligence and autonomous vehicles.
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5th-Generation BiCS FLASH(TM) (Photo: Business Wire)
Going forward, Kioxia will apply its new fifth-generation process technology to larger capacity devices, such as 1 terabit (128 gigabytes) TLC and 1.33 terabit 4-bit-per-cell (quadruple-level cell, QLC) devices.
Kioxia’s innovative 112-layer stacking process technology is combined with advanced circuit and manufacturing process technology to increase cell array density by approximately 20 percent over the 96-layer stacking process. The new technology reduces the cost per bit and increases the manufacturability of memory capacity per silicon wafer. Additionally, it improves interface speed by 50 percent and offers higher programming performance and shorter read latency.
Since announcing the world’s first*2 prototype 3D flash memory technology in 2007, Kioxia has continued to advance development of 3D flash memory and is actively promoting BiCS FLASH™ to meet the demand for larger capacities with smaller die sizes.
Fifth-generation BiCS FLASH™ was developed jointly with technology and manufacturing partner Western Digital Corporation. It will be manufactured at Kioxia’s Yokkaichi Plant and the newly built Kitakami Plant.
1. Not all features have been tested and device characteristics may change in the future.
2. Source: Kioxia Corporation, as of June 12, 2007.
* All other company names, product names, and service names mentioned herein may be trademarks of their respective companies.
Kioxia is a world leader in memory solutions, dedicated to the development, production and sale of flash memory and solid state drives (SSDs). In April 2017, its predecessor Toshiba Memory was spun off from Toshiba Corporation, the company that invented NAND flash memory in 1987. Kioxia is committed to uplifting the world with memory by offering products, services and systems that create choice for customers and memory-based value for society. Kioxia's innovative 3D flash memory technology, BiCS FLASH™, is shaping the future of storage in high-density applications, including advanced smartphones, PCs, SSDs, automotive and data centers.