公开(公告)号：US09690654B2

公开(公告)日：2017-06-27

申请号：US14979971

申请日：2015-12-28

申请人： Hyery No ,  Sangkwon Moon ,  Suejin Kim ,  Heewon Lee

发明人： Hyery No ,  Sangkwon Moon ,  Suejin Kim ,  Heewon Lee

IPC分类号： G11C29/00 ,  G06F11/10 ,  G06F3/06 ,  G11C29/52 ,  G11C29/42 ,  G11C11/56

CPC分类号： G06F11/1068 ,  G06F3/0604 ,  G06F3/0619 ,  G06F3/064 ,  G06F3/0679 ,  G06F11/1048 ,  G11C11/5642 ,  G11C29/42 ,  G11C29/52

摘要： A nonvolatile memory system includes a nonvolatile memory device and a memory controller managing the nonvolatile memory device. The operation method includes receiving a read command and a read address from an external device, reading read data stored in memory cells connected to a selected word line of a selected memory block corresponding to the read address in response to the read command, and detecting and correcting error bits of the read data. The method includes estimating the number of error bits of unselected word lines on the basis of erase leaving times of memory cells connected to the unselected word lines of the selected memory block and the detected error bits, and performing read-reclaim operation on at least one word line among the selected word line and the unselected word lines on the basis of the estimated number of error bits.