公开(公告)号：US20150339070A1

公开(公告)日：2015-11-26

申请号：US14711605

申请日：2015-05-13

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： HYUNSEOB LEE ,  DU-WON HONG ,  MOONWOOK OH

IPC: G06F3/06

CPC classification number: G06F3/0619 ,  G06F3/06 ,  G06F3/0655 ,  G06F3/0679 ,  G06F11/00 ,  G06F12/00 ,  G06F12/0246 ,  G06F2206/1014 ,  G06F2212/1032 ,  G06F2212/1036 ,  G06F2212/7205 ,  G11C16/3495 ,  G11C29/76 ,  G11C2029/0409

Abstract: A memory controller controls a nonvolatile memory device including a plurality of user blocks and a plurality of reserved blocks. A ratio of the number of used reserved blocks among the reserved blocks during a predetermined period to an operation count during the predetermined period is calculated and an end of lifetime warning signal to an external device based on the calculated ratio is transmitted. Bad blocks among the user blocks are replaced by one or more of the reserved blocks If at least one block among the user blocks becomes a bad block, the memory controller replaces the bad block with any one of the reserved blocks, and the reserved block used indicates a reserved block replaced with at least one of the user blocks. The operation count can be, for example, an erase count of the nonvolatile memory device, a program count of the nonvolatile memory device, and/or a time count indicating usage time.

Abstract translation: 存储器控制器控制包括多个用户块和多个保留块的非易失性存储器件。 计算预定时间段内的保留块之间使用的保留块的数量与预定时段期间的操作计数的比率，并且发送基于所计算的比率的向外部设备的终止警告信号的结束。 用户块中的坏块被一个或多个保留块替换如果用户块中的至少一个块变为坏块，则存储器控制器用任何一个保留块替换坏块，并且使用保留块 指示用至少一个用户块替换的保留块。 操作计数可以是例如非易失性存储器件的擦除计数，非易失性存储器件的程序计数和/或指示使用时间的时间计数。