Seminar Topic on DDR2 SDRAM

Introduction to DDR2 SDRAM:

The development DRAM is double data rate two synchronous dynamic random access memory. It has many advantages when compare to dynamic random access memory. It belongs to the family of SDRAM and has many DRAM implementations. In this data is transmitted twice per one clock. In this paper we will discuss about the design and processing speed of synchronous dynamic random access memory.

Brief on DDR2 SDRAM:

The DDR has 2 bits wide of prefetch and DDR2 has 4 bits wide prefetch buffer. The DDR2 consumes less power has the operating voltage dropped from 2.5v for DDR to 1.8V. Fine pitch ball grid array package is present on the DDR2 chips and these occupy very less memory modules.

These have lower thermal resistance between the packages which prevents the ship from overheating.  The FBGA packages have very shorter distances which develops the lower inductance property due to which the unwanted distortion signals gets eliminated. The DDR2 employs CAS and adaptive latency which makes the command and data bus efficient for sustainable bandwidths. Differential strobe signals are used by DDR2 which have higher drive performance due to which higher transition time responses are achieved.

Advantages of DDR2 SDRAM:

The DDR2 achieves higher bandwidths than the available random access memory models. It consumes very less power as it operates at a low operating frequency of 1.8V.      Due to the fine pitch ball grid array package present in the design it offers higher densities. As the mirror signals are eliminated the noise present is very negligible. 

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