Impact of die partitioning on reliability and yield of 3D DRAM

Abstract

In this paper we present comparative study on reliability and yield analysis of 3D SDRAM designs built with two practical die partitioning styles, namely, cell/logic-mixed and cell/logic-split. In cell/logic-mixed partitioning, each die contains DRAM cells and peripheral logic components except for the last one that contains I/O logic. In our cell/logic-split style, each die contains DRAM cells and small amount of logic except the bottom die that is all logic including peripheral modules and I/O cells. Our simulation and analysis results provide useful design tradeoffs in terms of area, TSV count, reliability, power, performance, and yield.