Static random access memory (SRAM) compatible, high availability memory array and method employing synchronous dynamic random access memory (DRAM) in conjunction with a single DRAM cache and tag

摘要

A static random access memory (SRAM) compatible, high availability memory array and method employing synchronous dynamic random access memory (DRAM) in conjunction with a single DRAM cache and tag provides a memory architecture comprising low cost DRAM memory cells that is available for system accesses 100% of the time and is capable of executing refreshes frequently enough to prevent data loss. Any subarray of the memory can be written from cache or refreshed at the same time any other subarray is read or written externally.