KIOXIA Advances Development of UFS Ver. 3.1 Embedded Flash Memory Devices with QLC Technology

Proof of Concept Device Addresses Storage Challenges Facing Next-Gen Mobile Devices

SAN JOSE, Calif., January 19, 2022 – Continuing to lead the way forward for UFS technology, KIOXIA America, Inc. today announced the launch of its Universal Flash Storage (UFS)* Ver. 3.1 embedded flash memory devices with 4-bit-per-cell, quadruple-level cell (QLC) technology. For applications needing high density, such as cutting-edge smartphones, KIOXIA QLC technology enables the capability to achieve the highest densities available in a single package.

The new 512 Gigabyte** QLC UFS PoC (Proof of Concept) devices utilize the company’s 1 Terabit** BiCS FLASH™ 3D flash memory with QLC technology, for potential larger Terabyte scale QLC UFS density offerings in the future.  The new device is designed to meet the increasing performance and density requirements of mobile applications driven by higher resolution images, 5G networks, 4K plus video and the like. 

“KIOXIA has been at the forefront of UFS memory since 2013 when we were the first to sample the technology1, and we continue to update our lineup of managed flash solutions that make an improved user experience a reality,” noted Scott Beekman, vice president, Memory Business Unit, for KIOXIA America, Inc. “QLC UFS is another compelling solution to add to this broad lineup”

KIOXIA is now sampling its 512 Gigabyte QLC UFS PoC devices to OEM customers. For more information, visit

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 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 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. For more information, please visit


1: Source: KIOXIA Corporation, as of February 2013.

*Universal Flash Storage (UFS) is a product category for a class of embedded memory products built to the JEDEC UFS standard specification.

The samples are POC devices under development and have some feature limitations. Furthermore, specifications of the devices are subject to change without prior notice.

Read and write speed may vary depending on the host device, read and write conditions, and file size.

**In every mention of a KIOXIA product: Product density is identified based on the density of memory chip(s) within the Product, not the amount of memory capacity available for data storage by the end user. Consumer-usable capacity will be less due to overhead data areas, formatting, bad blocks, and other constraints, and may also vary based on the host device and application. For details, please refer to applicable product specifications. The definition of 1KB = 2^10 bytes = 1,024 bytes. The definition of 1Gb = 2^30 bits = 1,073,741,824 bits. The definition of 1GB = 2^30 bytes = 1,073,741,824 bytes. 1Tb = 2^40 bits = 1,099,511,627,776 bits.

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  • Information in this press release, including product pricing and specifications, content of services, and contact information is current and believed to be accurate on the date of the announcement, but is subject to change without prior notice. Technical and application information contained here is subject to the most recent applicable KIOXIA product specifications.