Patent ID: 7330995
Filing Date: 2008-02-12
Classification: G06F,G11C

Abstract:
1. A nonvolatile memory apparatus comprising: an electrically rewritable nonvolatile memory; and a card controller which performs a memory control and an external interface control, wherein said electrically rewritable nonvolatile memory has a nonvolatile memory part having a plurality of memory cells, said nonvolatile memory part including, as nonvolatile memory areas, a plurality of physical address areas, each of which corresponds to a logical address, and a save area which saves data stored in an arbitrary one of said physical address areas, wherein in a first accessing in response to a data write instruction on a required logical address received from outside thereof, said card controller stores a first data stored in a first physical address area corresponding to said required logical address to said save area, and writes a second data into said first physical address area and, wherein when a writing incompletion of said first physical address area is detected at an accessing to said first physical address area different from said first accessing in response to said data write instruction, said card controller performs a control of writing said first data stored in said save area to said first physical address area.