SRAM and flash memory

What is the unit in which data is erased in NAND flash memory?

  1. ABit
  2. BBlock
  3. CByte
Show answer and explanation

Answer: B. Block

In NAND flash, writing and reading are done in pages, but erasing is done in blocks made up of multiple pages. Even to rewrite part of a block, the whole block must be copied elsewhere and erased, so management by the controller is important.

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More SRAM and flash memory questions

  1. Which correctly describes a property of SRAM?
  2. In charge-trap cells, widely used in 3D NAND, which material is commonly used for the layer that stores charge?
  3. Under which condition does the data retention of flash memory tend to degrade?
  4. In recent advanced processes, what is the most appropriate reason SRAM cell area has become harder to shrink than logic?
  5. Which technique do NAND flash controllers use to cope with the increase in read errors that comes with storing more bits per cell?