This document provides an overview of flash memory and solid state drives (SSDs). It defines flash memory as electrically erasable and reprogrammable non-volatile storage that uses floating-gate transistors. SSDs contain flash memory and a flash translation layer (FTL) that maps logical block addresses to physical flash locations. The document describes flash memory cells, media organization, read/write operations, and challenges such as limited program/erase cycles that SSDs address through techniques like garbage collection and wear leveling.
2. What is Flash
• Obviously, The Flash we are talking about here is
not an Player.
• Here, Flash is short for Flash Memory
• Flash memory is an electronic non-volatile
computer storage media that can be electrically
erased and reprogrammed.
• Introduced by Toshiba in 1984
3. What is Flash
• Flash Memory uses Floating-gate(FG) transistor
• Categorized by the types of FG:
• NOR( ) Flash
• NAND( ) Flash
• Today, When we talk about Flash, mostly it refers to
NAND Flash.
• NOR Flash ,