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Kioxia Begins Mass Production of Industry's First QLC UFS Ver. 4.0 Embedded Flash Memory Devices

TheLostSwede

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KIOXIA America, Inc. today announced that it has begun mass production of the industry's first Universal Flash Storage (UFS) Ver. 4.0 embedded flash memory devices with 4-bit-per-cell, quadruple-level cell (QLC) technology.

QLC UFS offers a higher bit density than traditional TLC UFS, making it suitable for mobile applications that require higher storage capacities. Advancements in controller technology and error correction have enabled QLC technology to achieve this while maintaining competitive performance. KIOXIA's new 512 gigabyte (GB) QLC UFS achieves sequential read speeds of up to 4,200 megabytes per second (MB/s) and sequential write speeds of up to 3,200 MB/s, taking full advantage of the UFS 4.0 interface speed.




KIOXIA QLC UFS is well-suited for smartphones and tablets, as well as other next-generation applications where higher storage capacity and performance are key considerations - including PCs, networking, AR/VR, IoT, and AI.

Key Features include:
  • Supports High Speed Link Startup Sequence (HS-LSS) features: With conventional UFS, Link Startup (M-PHY and UniPro initialization sequence) between device and host is performed at low-speed PWM-G1 (3~9 megabits per second), but with HS-LSS, it can be performed at a faster HS-G1 Rate A (1,248 megabits per second). This is expected to reduce the time for Link Startup by approximately 70% compared to the conventional method.
  • Enhances security: By utilizing Advanced RPMB (Replay Protected Memory Block) for improved read and write access to security data, such as user credentials on RPMB area, and RPMB Purge to ensure discarded data may be sanitized securely and rapidly.
  • Supports Extended Initiator ID (Ext-IID): Intended to be used with Multi Circular Queue (MCQ) at the UFS 4.0 host controller for improved random performance.

KIOXIA was the first to introduce UFS technology, and continues to develop new innovative flash products. The new QLC UFS Ver. 4.0 device integrates the company's innovative BiCS FLASH 3D flash memory and a controller in a JEDEC standard package. UFS 4.0 incorporates MIPI M-PHY 5.0 and UniPro 2.0 and supports maximum theoretical interface speeds of up to 23.2 gigabits per second (Gbps) per lane or 46.4 Gbps per device. UFS 4.0 is backward compatible with UFS 3.1.

"KIOXIA's introduction of the industry's first QLC UFS Ver. 4.0 devices underscores our commitment to pushing the boundaries of storage technology," said Maitry Dholakia, vice president, Memory Business Unit, KIOXIA America, Inc. "By leveraging QLC technology, we are able to deliver higher densities and cost efficiencies, enabling our customers to meet the growing demands of today's data-intensive applications while maintaining exceptional performance standards."

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Because everyone wants QLC. Especially in the smallest format possible.
 
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