DRAM

How does the data retention time of DRAM cells generally change as temperature rises?

  1. AIt gets longer
  2. BIt does not change
  3. CIt gets shorter
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Answer: C. It gets shorter

As temperature rises, junction leakage current increases and the capacitor charge is lost faster, so retention time gets shorter. For this reason, DRAM standards include provisions for shortening the refresh interval at high temperatures.

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More DRAM questions

  1. Which correctly describes a soft error in memory?
  2. Compared with SRAM, which is a characteristic of DRAM?
  3. Which correctly describes redundancy repair, used to improve DRAM yield?
  4. What does an error-correcting code (ECC) used in memory do?
  5. In DRAM, why is access time shorter when the same row (page) is accessed repeatedly?