Are the QDR-II+ and QDR-II devices pin compatible?

Question: Are the QDR-II+ and QDR-II devices pin compatible?

 

Answer:


Response: Yes. QDR-II+ and QDR-II are pin compatible. The only two differences are that  for QDR-II pin P6 is C signal and pin R6 is C# signal, and for QDR-II+ pin P6 is QVLD signal and pin R6 is NC. For more details, please see AN6017 - Differences in Implementation of QDR™II/DDRII and QDRII+/DDRII+ Memory Interfaces