Flash Memory


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Flash Memory

  1. 1. Flash Memory Presented By: Manoj Kadam S.Y.BCA (M3)
  2. 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. 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. 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. 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. 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. 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. 8. Types of Flash Memory 1. Mobile device memory 2. Compact Flash Memory 3. USB Flash Drives
  9. 9. Mobile device memory MultiMedia Memory Flash Card (MMC)Micro Secure Digital Card (Micro SD Card)
  10. 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. 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. 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. 13. Compact Flash Memory
  14. 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. 15. USB Flash Drives
  16. 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. 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. 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. 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