Memory Systems
Administrivia
Today’s Lecture
Big Picture
Where Are We?
Review: Computer Memory
Our Naïve View of Memory
Question
System Organization
Processor and Caches
Memory
Memory Technology
Random Access Memory (RAM) Technology
Technology Trends
Static RAM Cell
Typical SRAM Organization: 16-word x 4-bit
Logic Diagram of a Typical SRAM
Typical SRAM Timing
1-Transistor Memory Cell (DRAM)
Introduction to DRAM
Classical DRAM Organization (square)
Typical DRAM Organization
Logic Diagram of a Typical DRAM
DRAM Write Timing
DRAM Read Timing
Increasing Bandwidth - Interleaving
SPARCstation 20’s Memory System Overview
Fast Memory Systems: DRAM specific
Summary of Memory Technology
Email: alvy@cs.duke.edu
Home Page: http://www.cs.duke.edu/~alvy