Digital Electronics and Design with VHDL

16 Volatile Memories

Chapter Contents

16.1 Memory Types

16.2 Static Random Access Memory (SRAM)

16.3 Dual and Quad Data Rate (DDR, QDR) SRAMs

16.4 Dynamic Random Access Memory (DRAM)

16.5 Synchronous DRAM (SDRAM)

16.6 Dual Data Rate (DDR, DDR2, DDR3) SDRAMs

16.7 Content-Addressable Memory (CAM) for Cache Memories

16.8 Exercises

Objective:

Virtually any digital system requires some kind of memory, so understanding how memories are built, their main features, and how they work is indispensable. Volatile memories are described in this chapter, while nonvolatile ones are described in the next. The following volatile types are included below: SRAM (regular, DDR, and QDR), DRAM, SDRAM (regular, DDR, DDR2, and DDR3), and CAM.

16.1 Memory Types ...