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DDR — Double Data Rate

Transfers data on both edges of a memory clock.

Acronym study batch 1 · reviewed 2026-10-20

Why learn DDR — Double Data Rate?

Transfers data on both edges of a memory clock.

Where it came from

DDR generations are not physically or electrically interchangeable.

• Memory aid (a learning cue, not the expansion): Double = up edge and down edge.

Build your understanding

Work through these exercises in order. Try the task before opening a reference.

1. Without looking, expand DDR: Double Data Rate.
2. Recall this memory aid: Double = up edge and down edge.
3. Explain the practical use: Transfers data on both edges of a memory clock.
4. Explain this distinction: DDR generations are not physically or electrically interchangeable.
5. Identify DDR in a device specification, architecture diagram, or system inventory.

Documentation and sources

• Micron DRAM products and technical resources (www.micron.com)

Catalog source: technology-maxxing. This page reproduces the existing catalog’s learning material and source links.