A New Two-Tiered ECC Configuration Method for Cluster Error Correction in HBM Architecture

HBM (high bandwidth memory) is an emerging technology for high performance computing, but it has a different structure from traditional memory, and thus a new solution is needed. In this brief, we present an ECC (error correcting code) configuration method for SWD (sub-wordline driver) fault correction in the two-tiered ECC structure of HBM. Existing method does not have the correction capability to cover the entire range of a SWD cluster fault. In this brief, the SWD fault correction capability of the proposed method is presented through mathematical inference. And the simulation results also showed the same correction capability as the inference. And it shows the result of reducing the overhead and latency of encoder and decoder hardware when compared to the existing method.