|[February 24, 2014]
Toshiba Develops World's Fastest Device Controller for Embedded NAND Flash Memory Module Compliant with JEDEC UFS Ver.2.0 Standard
TOKYO --(Business Wire)--
Corporation (TOKYO:6502) today announced that it has developed the
world's fastest device controller for embedded NAND flash memory modules
compliant with the Universal Flash Storage (UFS) Ver.2.0 and UFS Unified
Memory Extension (UME) Ver.1.0 standards defined by JEDEC Solid State
Technology Association (JEDEC). An embedded NAND flash memory module
integrating the controller achieves a random read performance about 10
times faster than modules compliant with the e•MMCTM 
standard now widely used in low- to high-end mobile devices. The device
controller secures a performance equivalent to that of Solid State
Drives (SSDs) for personal computers in a package as small as a
Toshiba presented the new device controller at the 2014 IEEE (News - Alert)
International Solid-State Circuits Conference (ISSCC) in San Francisco,
California, on February 12.
Recent advances in CPU processing power and DRAM capacity in smartphones
and tablet PCs allow users to enjoy more powerful applications,
including high resolution video players and feature-rich games. Such
devices also require embedded NAND flash memory modules as their main
non-volatile storage. Going forward, the higher performance of embedded
NAND Flash compliant with the UFS standard will secure its widespread
use in high-end mobile devices.
Current embedded NAND flash memory modules are increasingly unable to
store all the data required to execute commands received from the host
in the on-chip RAM (News - Alert) of their device controllers, largely because of its
increasing size; the device controllers have to execut multiple reads
of the command data from NAND flash memory, which slows command
execution. The result is growing demand for improved random read
performance and a better user experience. However, it is difficult to
secure anything more than incremental improvement in random read
performance, because it takes 10s of microseconds to read data from NAND
Toshiba (News - Alert) has developed a new device controller for embedded NAND flash
memory module to overcome these issues.
The new device controller stores data for executing a command received
from the host in the host-side DRAM, reducing the number of read
operations from NAND flash memory. This halves the time required to
process a read command. The procedure by which the device controller
writes data to the host-side DRAM and reads data from host-side DRAM is
compliant with the UFS UME Ver.1.0 standard, published at the same time
as UFS Ver.2.0.
Toshiba has also developed a hardware engine that executes read commands
received from the host in parallel and integrated it into the new device
controller. It achieves more than two times higher random read
performance compared with conventional technology.
These two new Toshiba technologies have realized embedded NAND flash
memory modules with a device controller that attains over 60 kIOPS
in random read performance of 4 KB access. This
performance level is about 10 times higher than that of modules
compliant with e•MMC Version 5.0.
The new device controller also integrates new, Toshiba-designed, analog
circuit technology that enables UFS's ultra-high-speed serial
communication at 5.8Gbps per lane, which avoids any increase in power
Mobile devices with an embedded NAND flash memory module that uses the
new device controller will offer higher random read performances that
will improve response time in user interactions and shorter application
start-up times, enhancing the overall user experience.
Sample shipping of embedded NAND flash memory modules with the new
device controller are scheduled to start in the first half of CY2014.
 e•MMCTM is a trademark and a product category
for a class of embedded memory products built to the JEDEC e•MMCTM
 Input / Output Per Second, number of
commands to complete in 1 second.
 Conditions are followings;
number of NAND flash memory chips is 8, size of access region is 8 GB,
and host latency is 1 microsecond.
Toshiba is a world-leading diversified manufacturer, solutions provider
and marketer of advanced electronic and electrical products and systems.
Toshiba Group brings innovation and imagination to a wide range of
businesses: digital products, including LCD TVs, notebook PCs, retail
solutions and MFPs; electronic devices, including semiconductors,
storage products and materials; industrial and social infrastructure
systems, including power generation systems, smart community solutions,
medical systems and escalators & elevators; and home appliances.
Toshiba was founded in 1875, and today operates a global network of more
than 590 consolidated companies, with 206,000 employees worldwide and
annual sales surpassing 5.8 trillion yen (US$61 billion). Visit
Toshiba's web site at www.toshiba.co.jp/index.htm
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