SRAM and flash memory

Compared with NOR flash, which is a characteristic of NAND flash memory?

  1. AFast random access, suitable for executing program code directly
  2. BCells are connected in series, so it is easy to make dense and suits high-capacity storage
  3. CIt is volatile memory that loses data when the power is off
Show answer and explanation

Answer: B. Cells are connected in series, so it is easy to make dense and suits high-capacity storage

NAND flash connects memory cells in series and reduces the number of contacts per cell, so the area per bit is small and it suits high capacities. It is used in SSDs and memory cards. NOR flash is the one with fast random reads suited to executing code directly. Both are non-volatile.

NAND flash cell string Select WL0 WL1 WL2 WL3 Select To bit line To source line Memory cells in series NAND: few contacts, very dense; read by page NOR: cells in parallel, each readable directly, but larger
Practice this topic Back to topic

More SRAM and flash memory questions

  1. In flash memory, what is the scheme that stores 3 bits of information in one memory cell called?
  2. Which correctly describes how data is written to and erased from flash memory?
  3. Which correctly describes 3D NAND flash memory?
  4. What is the main reason flash memory has a limited number of rewrite cycles?
  5. What is the purpose of wear leveling, used in SSDs and similar devices?