Characterizing DDR2 memory devices requires the ability to isolate read and write access cycles. A P P L I C A T I O N B R I E F Using LeCroy’s WaveScan to Isolate DDR2 Read/Write Cycles (LAB_WM776) Characterizing DDR2 memory devices requires the ability to isolate read and write access cycles. In DDR2 memory the read and write operations can be dis- tinguished by the timing relationships between the strobe and data lines as Figure 1: DDR2 waveforms showing the timing relationship between the shown in figure 1. In read operations the data changes are synchronous with the strobe (red trace) and the data (yellow trace) strobe t……