MULTI PROCESSOR SYSTEM HAVING MULTI PORT SEMICONDUCTOR MEMORY DEVICE AND NON-VOLATILE MEMORY WITH SHARED BUS

摘要

PURPOSE: A multi-processor system adopting a nonvolatile memory and a multiport semiconductor memory device having shared bus are provided so that the non-volatile semiconductor memory device of the multi-chip package type accessed through the shared bus with processor to exclusive is adopted. It is in comparison with the one-chip package type and the change of the software. CONSTITUTION: A shared memory region(11) respectively commonly through the other port by the first and the second processors. It is allocated within the memory cell array. An internal register(50) is located outside the memory cell array. The right to access about shared bus is offered to the first and the second processors. The non-volatile semiconductor memory device has the first and second nonvolatile memory domain frames(310, 320) correspondingly connected through the shared bus to the first and the second processors.