DRAM

In DRAM, what is the main reason for splitting the address into row and column addresses and supplying them in turn through the same pins?

  1. ATo reduce the number of address pins
  2. BTo eliminate the need for refresh
  3. CTo encrypt the data
Show answer and explanation

Answer: A. To reduce the number of address pins

DRAM has a large capacity, so supplying the whole address at once would require many pins. Supplying the row and column addresses through the same pins at different times (address multiplexing) reduces the number of pins. It also matches DRAM's internal operation of activating a row and then selecting a column.

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More DRAM questions

  1. What is the main purpose of dividing the inside of a DRAM into multiple banks?
  2. Why is the voltage change on the bit line very small when DRAM is read?
  3. Which correctly describes the idea of 3D DRAM, under research and development as a way to increase future DRAM capacity?
  4. In DRAM, what is the phenomenon in which repeatedly activating one row in a short time can flip data in adjacent rows?
  5. Which correctly describes the main leakage paths that determine the data retention time of DRAM cells?