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TECHNOLOGY CHALLENGES IN THE FLASH UNIVERSE
Siva Sivaram, Senior Vice President, Memory Technology
October 10, 2013
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Forward-Looking Statements
During our meeting today we may make forward-looking statements.
Any statement that refers to expectations, projections or other characterizations of future events or circumstances
is a forward-looking statement, including those relating to market position, market growth, product sales, industry
trends, supply chain, future memory technology, production capacity, production costs, technology transitions and
future products. This presentation contains information from third parties, which reflects their projections as of
the date of issuance.
Actual results may differ materially from those expressed in these forward-looking statements due to factors
detailed under the caption “Risk Factors” and elsewhere in the documents we file from time to time with the SEC,
including our annual and quarterly reports.
We undertake no obligation to update these forward-looking statements, which speak only as of the date hereof.
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Close to Half of Industry Bit Output Together with manufacturing partner Toshiba
Technology Leadership
4,900+ Patents
1991 2013
65% Commercial Revenue 35% Retail Revenue
A Global Leader in Flash Storage Solutions
Financials as of Q4, ‘13. Net Cash = [Cash + cash equivalents + short-term & long-term marketable securities] less [debt at maturity value] as of the end of Q2, ‘13. Headcount & patents as of Aug., ‘13. NPD Estimate, Jan., ‘13. Estimates of the memory card & USB markets from NPD (Jan. ‘13) and GfK Retail and Technology, Oct., ‘12. Gartner: NAND Flash Supply & Demand, WW 1Q ‘12-4Q ‘14, 2Q ’13. Update Jun., ‘13.
The Leading Retail Brand in Key Markets
Enterprise, Client and Retail SSDs
Qualified at 6 of the Top 7 Storage OEMs
All leading smartphone & tablet manufacturers use SanDisk
SanDisk Client SSD Design Wins at
11 Leading PC OEMs
The Leading Retail Brand in Key Markets
#1 Global Retail Revenue Share
Rankings Trailing 4 Qtr. Financials Global Operations Technology
5,000+ Employees
Fabs World Class NAND Capacity
19nm Leading Process Node
1Ynm Shipping
$6.17B Revenue
$2.86B Gross Profit
$0.74B R&D Investment
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Enabling Innovation in 3 Mega Markets
Mobile Computing Consumer
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Growth from Average 14GB per Device in 2014 to 28GB by 2016
Content Mobility Connectivity Demand for Flash
More Powerful Mobile Devices
More Responsive Data Centers
40ZB of Content In 2020*
* IDC “THE DIGITAL UNIVERSE IN 2020: Big Data, Bigger Digital Shadows, and Biggest Growth in the Far East”, Dec., ‘12. Based upon SanDisk projections of capacity growth in SanDisk’s markets. Excludes SanDisk’s capacity estimates for SSD overprovisioning.
What’s Next
6 Source: IDC Digital Universe Study, sponsored by EMC, December 2012
40 Zettabytes of data in 2020
Or 40 Billion Terabyte Drives of Data
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From now until 2020, the digital universe will double every two years. That’s more than 5,200 gigabytes for every man, woman and child in 2020!
Source: IDC IVIEW: The Digital Universe in 2020: Big Data, Bigger Digital Shadows, and Biggest Growth in the Far East; John Gantz and David Reinsel, 12/2012
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Expanding the Possibilities of Storage
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Flash Cheaper than DRAM
$1
$10
$100
$1,000
$10,000
1Q00
1Q01
1Q02
1Q03
1Q04
1Q05
1Q06
1Q07
1Q08
1Q09
1Q10
1Q11
1Q12
Ave
rag
e P
rice
per
Gig
abyt
e
DRAM
From: Hybrid Drives: How, Why, & When?
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NAND and Logic Technology Scaling Trend
NAND
Logic
Technology Node
[nm]
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3-Pronged Strategy to Meet the Technology Challenge
Demand for
Storage
2D NAND Scaling
3D Resistive RAM
(ReRAM)
BiCS 3D NAND
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32Gb Test Chip Successfully Made on 24nm node
Potential to Scale Below 10nm
Ultimate Scalable 3D technology
Most Efficient and Scalable 3D NAND Architecture
Positioning for Industry Leadership
System Solutions Being Defined
SanDisk’s Technology Path
19nm 1Ynm
1Ynm 1Znm
1Znm ??
2D NAND
3D BiCS
Bit Cost Scalable NAND
3D ReRAM
3D Resistive RAM
Presented at the 2013 SanDisk Investor Day, 2013
2D NAND 1X 1Y 1Z
1X 1Y 1Z
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Limited endurance in Flash Memory is due to Tunnel-Oxide Degradation and trap generation
Thinner Oxide can help less data retention
Heating to get the traps out?
FG
FG
FG
FG
More P/E Cycle
Thin
ner
O
xid
e Flash Memory Endurance
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REDUCTION IN # OF ELECTRONS WITH SCALING
43nm 32nm 24nm 19nm 1Ynm
Technology Node
Electrical Limit Process innovations required to slow down reduction in # of electrons in the cell and maintain reliability
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3 bits per cell continue in 1Ynm and 1Znm
More applications will use 3 bits per cell for cost reduction
Alg
orith
m a
nd S
yste
m
Incre
asin
gly
Im
port
ant
2bits/cell 00 01 10 11
3 bits/cell 56nm 000 001 010 011 100 101 110 111
ISSCC 2008
3 bits/cell 32nm 000 001 010 011 100 101 110 111
3 bits/cell 24nm 000 001 010 011 100 101 110 111
000 001 010 011 100 101 110 111
3 bits/cell 19nm
Voltage
Logical Scaling Challenge with Physical Scaling
Reliability Margin
ISSCC 2012
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Careful scaling required to extend mainstream lithography and keep manufacturing costs low
CELL X, NM
CEL
L Y
, NM
Expensive Tool
Immersion Limit
Cheaper
Imm
ersi
on
Lim
it
Lithography
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X X Cell Cell Cell
Physical Proximity Limit Process innovations required to keep cell-to-cell interaction in check without changing proven cell structure
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The Effect of Cell-to-Cell Interferences
Interferences and noise cause the Vt Distribution to shift and widen
160nm 90nm 70nm 56nm 43nm 32nm 24nm 24nm(AG) 19nm 19nm(AG)
diagonal
WL-WL
BL-BL
FG FG FG
FG FG FG
FG FG FG
No
rmaliz
ed C
CC
Ratio
Air
Gap
WordLine
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BiCS
3D NAND FLASH: WHY?
FG
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BiCS 3D NAND – Alternative to 2D NAND
Leverage existing NAND Fab infrastructure; does not need EUV
Large cell size for better reliability
High density potential by stacking more layers
Small proximity effect
Bit line Source line
Select Gate
Control Gate
Picture Courtesy Toshiba, VLSI Symposium 2009
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Proximity Effect in BiCS
4X nm 3X nm 2X nm 1X nm BiCS
Pro
xim
ity
Effe
ct
WL Direction
BL Direction
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Resistive RAM (ReRAM)
ReRAM
3D Stacking
Short Access Time
Higher endurance
Scaling Potential
3D ReRAM has the potential to provide a long-term solution post-NAND
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Key Technology Takeaways
We see NAND scaling through 1Znm: ensures cost leadership
BiCS 3D-NAND will provide meaningful cost reduction vs. 1Znm NAND
3D-NAND pilot production in 2015 and high volumes in 2016
3-D ReRAM research is ongoing; potential scaling to sub-10nm; successor to NAND into the next decade
2D-NAND and 3D technologies will co-exist this decade
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SanDisk is a trademark of SanDisk corporation, registered in the United States and other countries. Other brand names mentioned herein are for identification purposes only and may be the trademarks of their respective holder(s).
1GB=1,000,000,000 bytes. Actual user capacity less.
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Back-up
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Diversified Portfolio of NAND Flash Solutions
Commercial
Consumer Enterprise
Retail