Memory devices play a substantial role in developing increasingly fast computer systems. Most computers use a memory hierarchy consisting of different memory types with different features. This thesis examines dynamic random access memory (DRAM), which is used as the main memory. It looks at some fundamental features of computer memory technology and explains the structure and principle of operation of DRAM devices. A major focus is on synchronous dynamic random access memory (SDRAM) and on distinctions between evolutionary double-data rate SDRAM devices. Their high capacity is mainly due to a prefetch register and burst transfer. The thesis also explores various innovations and techniques designed into the new DDR4 SDRAM device leading to performance and power advantages.
|
