SRAM and flash memory

Which correctly describes a property of SRAM?

  1. AIt retains data without refresh while powered, but loses data when the power is turned off
  2. BIt retains data when the power is turned off
  3. CIt needs periodic refresh
Show answer and explanation

Answer: A. It retains data without refresh while powered, but loses data when the power is turned off

SRAM holds data in a latch circuit, so no refresh is needed as long as it is powered. However, it is volatile and loses its data when the power is turned off. Because it is fast, it is used for CPU caches and register files.

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More SRAM and flash memory questions

  1. In charge-trap cells, widely used in 3D NAND, which material is commonly used for the layer that stores charge?
  2. Under which condition does the data retention of flash memory tend to degrade?
  3. In recent advanced processes, what is the most appropriate reason SRAM cell area has become harder to shrink than logic?
  4. Which technique do NAND flash controllers use to cope with the increase in read errors that comes with storing more bits per cell?
  5. What is a typical use of NOR flash memory?