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Flash Memory


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  • 1. Flash Memory Presented By: Manoj Kadam S.Y.BCA (M3)
  • 2. Points of Discussion  Introduction of Flash Memory  History of Flash Memory  Use of Flash Memory  Advantages & Disadvantages  Types of Flash Memory  New Developments  Future of Flash Memory
  • 3. Flash Memory  Flash memory is a non-volatile computer storage technology that can be electrically erased and reprogrammed.  It is a specific type of EEPROM (electrically erasable programmable read-only memory) that is erased and programmed in large blocks.  Flash memory is also known as a solid state storage device
  • 4. History of Flash Memory  Flash memory was invented by Dr. Fujio Masuoka while working for Toshiba in 1980.  According to Toshiba, the name “Flash" was suggested by Dr. Masuoka's colleague, Dr. Shoji Ariizumi, because the erasure process of the memory reminded him the flash of a camera.  Dr. Masuoka presented the invention at the International Electron Devices Meeting (IEDM) in 1984 held in San Francisco, California.
  • 5. Use of Flash Memory  Flash memory is used for easy and fast information storage in computers, digital cameras and home video game consoles.  It used in Memory Cards, USB Flash drives and Solid State drive for transfer of data between computers and other digital products.
  • 6. 1. Very easily allows to transport documents from one computer to another. 2. Easy to carry around with. 3. It holds a lot more data than a floppy disk. 4. It is a USB drive so it can be used on any computer system. 5.Better kinetic shock resistance than hard disks. 6. Less power requirement. Advantages:
  • 7. 1. If you want to hold a big amount of data. they can be quite expensive to buy. 2. Small so easy to loss. 3. They can take viruses from one computer to another Disadvantages:
  • 8. Types of Flash Memory 1. Mobile device memory 2. Compact Flash Memory 3. USB Flash Drives
  • 9. Mobile device memory MultiMedia Memory Flash Card (MMC)Micro Secure Digital Card (Micro SD Card)
  • 10. Mobile device Memory  Memory card or Flash card is an electronic flash memory data storage device used for storing digital information.  Used in cellular phones, digital cameras, MP3 players, and camcorders.
  • 11. Micro Secure Digital Card (Micro SD Card)  Micro SD is a small form factor SD card used in mobile phones.  When used with its adapter, it is also compatible with all SD devices.
  • 12. MultiMedia Memory Flash Card (MMC)  MultiMedia Memory Flash Card (MMC) is about the size of a postage stamp.  It is slightly thinner than an SD Card and can be used in most the same applications.  The MultiMedia Memory Flash Card is an ultra-small, high storage solution for MP3 music players, and global positioning systems (GPS).
  • 13. Compact Flash Memory
  • 14. Compact Flash Memory  Compact Flash is a mass storage device format used in portable electronic devices for storage.  The format was first specified and produced by SanDisk in 1994.
  • 15. USB Flash Drives
  • 16. USB Flash Drives  USB flash drive consists of a flash memory data storage device integrated with a USB (Universal Serial Bus) 1.1 or 2.0 interface. USB flash drives are typically removable and rewritable,  These devices plug directly into virtually any USB port and can support up a massive 32GB of disk space, all in a compact size.  All USB Flash Drives are "plug and play" compatible devices, so the computer will automatically detect your USB Flash Drives.
  • 17. USB Flash drives 1 USB connector 2 USB mass storage controller device 3 Test points 4 Flash memory chip 5 Crystal oscillator 6 LED Light 7 Write-protect switch 8 Space for second flash memory chip
  • 18. New Developments  DINOR (Divided bit-line NOR) Flash  Attempts to reduce the chip real estate compared to conventional NOR.  Low power dissipation, sector erase, high data transfer rate
  • 19. Future of Flash Memory  Continues to be among the most aggressively scaled electronic technologies  Memory cell size minimum of 20 nm expected to be met in 2011  May be replaced by Phase-Change RAM or other emerging technologies