DDR2 SDRAMs were subsequently specified by 2003 (JESD79-2) offering pin bandwidth of up to 800Mb/s - double that of DDR SDRAMs. During the development of the DDR and DDR2 SDRAM standards, engineers ...

Figure 2: DDR Memory Architecture (Top) and DDR2 Memory Architecture (Bottom) On Die Termination On Die Termination (ODT) is built into each DDR2 memory chip on a module, with a pin dedicated to ...