Double data rate - Wikipedia

Double data rate

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In computing, double data rate (DDR) describes a computer bus that transfers data on both the rising and falling edges of the clock signal and hence doubles the memory bandwidth by transferring data twice per clock cycle.12 This is also known as double pumped, dual-pumped, and double transition. The term toggle mode is used in the context of NAND flash memory.

Printed 2026-10-25.

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Footnotes

  1. Hennessy, John L.; Patterson, David A. (2007). Computer architecture: a quantitative approach. Amsterdam: Morgan Kaufmann. p. 314. ISBN 978-0-12-370490-0. ↩

  2. “double data rate (DDR) Definition”. Intel. Retrieved 2024-04-07. ↩