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“Emerging Memory Trends and Career Opportunities”
By
Chinnu SenthilkumarGeneral Manager Engineering
India Device Design Centre
Private Limited
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Down the Memory Lane…
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Early Stages of Memory - Punch cards
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Early Stages of Memory - Tape Drive
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Early Stages of Memory - Magnetic disc
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Semiconductor Memories - Volatile
Present Generation SRAM
Features: Fast access, Low Power, High Cost, Volatile Applications: Cache Memory
DRAM Features: Med access, High Power, High density, Low
Cost, Volatile Applications: DIMM and RIMM cards in PC
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Semiconductor Memories: Non-Volatile
FLASH NOR
Features: Random Access, Med Density, Med Power, Multi-Level
Applications: Boot block, Code storage
NAND Features: Sequential access, High Density, Reliability, Low
Cost/bit, Low Power, Multi-Level Applications: MP3 Players, Digital Camera, Cell Phone SD
Cards, PDAs, USB Sticks etc…
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Consumer Electronics Requirements
Reasonable Access Time
High Density meeting Mass Storage requirements (in 10s of GB range)
Non-Volatility Feature as in Flash Memory
All the above with Low Process Cost Low Standby Power
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Semiconductor Memories Comparison
Comparative Study of Semiconductor Memories
DRAM SRAM NAND FLASH
Write Speed Moderate Fast Moderate
Read Speed Moderate Fast Fast
Density Medium Low High
Power High Moderate Low
Refresh Yes No No
Retention No No Yes
Scalability Bad Good Good
Write/Erase Charge (Capacitance) CMOS Logic Charge (Tunneling)
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NOR Vs. NAND flash
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NAND Flash - Overview
Introduction Applications
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Flash Memory – How does it work?
WL =0V
I 0nA
VTH = 4V
Programmed Cell
WL =0V
I = Sense Current
VTH = -1V
Erased Cell
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SLC Vs MLC
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NOR vs. NAND Flash - Applications
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NOR vs. NAND Flash – Market Growth
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Looking Forward…
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Where are we in this key segment?…
SanDisk Market Presence…
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SanDisk Mega Markets…
NAND flash Primarily used for bulk data storage Examples:
Music - MP3 players Digital Images - Digital cameras Videos - Camcorders Phone book/multimedia/ applications - Mobile Phones
& PDA Data - USB drives Games - PSP
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Opportunities…
Overview- Opportunities in Flash
Memory/Applications Sector
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Engineering Opportunities VLSI Design
Analog/Mixed Signal Design ASIC Design/Arch VLSI CAD Si characterization
Hardware System HW design System Validation
FW/SW Development Validation
CMOS Process
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Non-Engineering Opportunities
IT Supply Chain Management Business Intelligence Sales/Marketing Technical Support Center
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Companies in this sector…
SanDisk India operations started in Bangalore
Toshiba Samsung Apple Portal Player Intel AMD ST Microelectronics
….
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SanDisk India Business Objective
Incorporated in March 2005
Focus Areas Mixed Signal Chip design & development System design and Testing Embedded SW development/Testing
Future Plans Enterprise SW (Supply Chain Management) Customer return material QA
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Why SanDisk? Fastest Growing Company
Fortune ranked SanDisk as the 8th Fastest Growing Company in US
Fosters Creativity and Innovations Holds 400+ Key Patents in Flash Memory & Systems 2005 Royalty amounted to $200+ Million USD
Muti-Geographical Team Presence in US, Japan, Israel, India, Scotland, Taiwan,
Hong Kong
Opportunity to work in Cutting Edge Technology Advanced CMOS NAND Technology in Deep Sub-Micron Leader in NAND Technology & Controllers
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Key Executives
Top Notch Management Team CEO Dr. Eli Harari Ph.D, Princeton University
Pioneer in Non-Volatile Memory (from 1970s) Founded SanDisk and Wafer Scale Integration Listed in Forbes “America’s Most Powerful People”
COO Mr. Sanjay Mehrotra, MSEE, UC Berkeley Pioneer in EEPROM & Flash Memory Co-Founder of SanDisk
VP Dr. Khandker Quader, BSEE MIT, Ph.D UC Berkeley
Pioneer in Flash Memory and Key Contributor in NAND Memory Industry
Holds Several Patents and published articles
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India Management
SanDisk India GM, Chinnu Senthilkumar, BE Anna University, MSEE University of Utah
12+ Years of Experience in Analog/Mixed Signal Design & Development
Worked in Intel(Folsom, California) and Texas Instruments(India) in Technical & Managerial capacities
Holds 12 Patents (Approved and Pending) in the areas of Analog/Mixed Signal Design
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Thank You….
Q & A
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Back-up Slides
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NOR Vs. NAND flash