SAN JOSE, Calif.–(BUSINESS WIRE)–Continuing to move Universal Flash Storage¹ (UFS) technology forward, KIOXIA America, Inc. today announced sampling² of new, higher performing UFS Ver. 4.0 embedded flash memory devices³. These devices deliver fast embedded storage transfer speeds in a small package size and are targeted to a variety of next-generation mobile applications, including leading-edge smartphones. The improved performance³ of UFS products from KIOXIA enables these applications to take advantage of 5G’s connectivity benefits, leading to faster downloads, reduced lag time and an improved user experience.

UFS Ver. 4.0 devices from KIOXIA integrate 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 theoretical interface speeds of up to 23.2 gigabits per second (Gbp/s) per lane or 46.4 Gbp/s per device. UFS 4.0 is backward compatible with UFS 3.1.

“Once again KIOXIA is maintaining its leadership in UFS, with our pipeline of newer, faster performing UFS devices,” noted Scott Beekman, vice president, Memory Business Unit, for KIOXIA America, Inc. “This is our second generation of UFS 4.0 devices, which were developed to keep pushing the performance boundaries from generation to generation.”

Key Features include:

• Performance improvement over previous generation⁴: +18% sequential write, +30% random write and +13% random read.
• 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 second⁵), but with HS-LSS, it can be performed at a faster HS-G1 Rate A (1248 megabits per second⁵). 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 faster 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.

For more information, please visit www.kioxia.com.

About KIOXIA America, Inc.

KIOXIA America, Inc. is the U.S.-based subsidiary of KIOXIA Corporation, a leading worldwide supplier of flash memory and solid state drives (SSDs). From the invention of flash memory to today’s breakthrough BiCS FLASH™ 3D flash memory technology, KIOXIA continues to pioneer innovative memory, SSD and software solutions that enrich people’s lives and expand society’s horizons. The company’s innovative BiCS FLASH™ 3D flash memory technology is shaping the future of storage in high-density applications, including advanced smartphones, PCs, SSDs, automotive, and data centers.