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EE
Web
PULSE
INTERVIEW
EE
Web.com
Issue 67
October 9, 2012
PULSE
Scott Nelson
Senior Vice President
of the Memory Business Unit
Toshiba America Electronics Components, Inc.
Scott Nelson
Senior Vice President
of the Memory Business Unit
Toshiba America Electronics Components, Inc.
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EE
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PULSE
TABLE
OF
CONTENTS
4
Scott Nelson
TOSHIBA AMERICA ELECTRONIC COMPONENTS, INC.
Interview with Scott Nelson - Senior Vice President for the Memory Business Unit
9
Featured Products
12
The Evolution of the NAND Flash Interface
BY
DOUG WONG
WITH TOSHIBA AMERICA ELECTRONIC COMPONENTS, INC.
An exploration into the recent improvements to the legacy NAND flash interface that have been
made in order to improve the interface speed.
18
Spectrum Analyzer and High Speed Data:
An Odd Couple
BY
MIKE STEINBERGER
WITH SISOFT
An introduction to the spectrum analyzer and how it can be used to provide valuable insights into
clocking, power supply noise and crosstalk in high speed data signals.
RTZ - Return to Zero Comic
29
3
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EE
Web
PULSE
INTERVIEW
Scott
Nelson
Toshiba Inc.
Senior Vice President for
the Memory Business Unit
Toshiba America
Electronic Components Inc.
4
EE
Web | Electrical Engineering Community
EE
Web
PULSE
INTERVIEW
What irst interested you in
electronics?
NAND with a sustainable yield
that would be profitable. Toshiba
had been in it since its inception,
so when the market really took off
with digital imaging, we were well
prepared.
endurance. NAND is adapting and
evolving to these applications in
these new segments. Of late, NAND
is emerging with faster interfaces,
thus, Toshiba offers Toggle 2.0
interface with transfer rates up
to 400MT/s/. For these emerging
enterprise applications that need
higher endurance, we have SLC
product and also a grade of MLC
that is more robust than consumer
grade MLC.
After graduating college, I entered
into the aerospace industry, working
for Northrop here in Southern
California. After several years at
Northrop, I made the decision to
accept a position with Toshiba in
1986 – making my tenure with the
company at 26 years and counting.
What interested me in pursuing a
career in the electronic industry
was the technology – specifically,
the technology leadership of
Toshiba back in the DRAM days.
This industry was relatively young,
with what seemed to be endless
potential and a full spectrum of
exciting challenges. Over the years,
I worked my way up through the
organization and in 1995, I stepped
into my first management role, where
I undertook a two-year Six Sigma
process improvement assignment
and finished that assignment as a
director. In 2007 I moved into my
current role as Senior Vice President
for the Memory Business Unit.
What do you see as the next
big direction to improve
current NAND products?
When Toshiba entered the NAND
market, there was really only one
type of NAND—single level cell
Do you think NAND will
continue to be able to shrink?
Will the density of packages
be able to increase at the
same rate?
“We currently offer
managed NAND
solutions that
manage bad block
management, wear
leveling and ECC, such
as eMMC - which can
be used in the mobile
and gaming space.
Another solution is
managing ECC with
the NAND chip.”
There’s a lot of talk about that in
the market right now, and I would
say that yes, it is slowing for the
floating gate technology. Maybe
there are one or two more steps to
it before it plateaus. We are going
to start looking at it in terms of
other NAND implementations that
may not be floating gate—perhaps
a 3D type of NAND solution where
density is going to be achieved by
arranging transistors vertically. The
other challenge is how to step down
in the process - the actual physics
of NAND - which is universal to all
the NAND suppliers in the industry.
It requires more and more error
correction, and time-to-market is
a constant accelerator, making it
more challenging to adopt next-
generation NAND to keep up with
the increasing requirements of
ECC.
What are the major memory
products that Toshiba
produces?
Electronic Components Inc.
In 1999, Toshiba made a very
strategic decision to exit the DRAM
business and focus all of our efforts
and technology in NAND. Toshiba
invented Flash technology—in 1984,
we invented NOR flash memory
and in 1987, we introduced NAND
flash memory at an IEEE meeting.
We’ve been very NAND-centric
since 2000, and all of our memory
products are supported by NAND
technology.
(SLC) NAND. More and more,
well-suited applications and
opportunities came into the
market and if we fast forward to
where we are today—there are
now four grades of NAND on the
market, which can be classified
as retail, OEM, SSD and the
enterprise grade – which requires
higher performance and higher
Toshiba’s products are moving from
raw NAND solutions to managed
NAND solutions. We currently offer
managed NAND solutions that
manage bad block management,
wear leveling and ECC, such as
eMMC - which can be used in the
mobile and gaming space. Another
solution is managing ECC with the
The NAND process itself is a bit
more involved and complicated than
its predecessors. For quite awhile,
it was a barrier to entry into the
market—the ability to manufacture
5
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