Abstract:
A memory system is provided and includes memory chips in each of which a first state output pin is arranged and a memory controller in which a first state input pin connected to a first channel including first ways respectively connected to the first state output pins arranged in the memory chips is arranged. The memory controller checks a first internal state of each of the memory chips, based on one or more of a chip enable signal and a CE reduction command of the memory chips, and a second signal received through the first state input pin as a result of an AND operation of first signals output through the first state output pins, during a state check interval for checking respective states of the memory chips.
Abstract:
A nonvolatile memory module including a plurality of memory chips, a spare chip, and a module controller may be provided. The plurality of memory chips may be disposed on a printed circuit board (PCB), and each of the plurality of memory chips may include a plurality of nonvolatile memory cells. The spare chip may be disposed on the PCB and includes a plurality of nonvolatile memory cells. The spare chip may perform different functions according to operation modes of the plurality of memory chips. The module controller may disposed on the PCB, and control operations of the plurality of memory chips and the spare chip.
Abstract:
A nonvolatile memory device utilizes a variable resistive element. The nonvolatile memory device includes a plurality of banks and first to third write global bit lines arranged to cross the plurality of banks. Each of the plurality of banks includes a plurality of nonvolatile memory cells using resistive material. The first, the second and the third write global bit lines are disposed directly adjacent to one another in order. When a write current is supplied to the first write global bit line during a write period, a fixed voltage is applied to the second write global bit line while the third global bit line floats.
Abstract:
Methods of operating nonvolatile memory devices include counting a number of consecutive read operations performed on a first memory region within the nonvolatile memory device, and executing a page reclaim operation on the first memory region in response to detecting that a count in the number of consecutive read operations meets or exceeds a threshold count. A page reclaim operation may include checking an error bit level within a page of data stored in a multi-level cell block within the memory device. The page reclaim operation may further include moving page data from the multi-level cell block to a single-level cell block in the memory device and error correcting the page data during the moving.
Abstract:
A memory system is provided and includes memory chips and a memory controller. Each of the memory chips one or more first state output pins arranged therein. The memory controller has arranged therein a first state input pin connected in a wired-AND configuration to the one or more first state output pins arranged in the memory chips. The memory controller is configured to transmit a chip enable signal and/or an initially set function command to the memory chips. Each of the memory chips outputs a first state signal having one level from among three logic levels according to a first internal operation state of the memory chip to the one or more first state output pins of the memory chip based on the chip enable signal and/or the initially set function command.
Abstract:
A nonvolatile memory module including a plurality of memory chips and a module controller on a printed circuit board (PCB) may be provided. Each of the plurality of memory chips may include a plurality of nonvolatile memory cell array layers stacked on a substrate in a three dimensional structure. The module controller may control operations of the plurality of memory chips. The module controller may operate each of the plurality of nonvolatile memory cell array layers included in each of the plurality of memory chips in one of a memory mode, in which a corresponding nonvolatile memory cell array layer is used as a working memory area that temporarily stores data for an operation of the nonvolatile memory module, and a storage mode, in which the corresponding nonvolatile memory cell array layer is used as a storage area that preserves data.
Abstract:
Provided are nonvolatile memory devices and a driving method of the nonvolatile memory devices. The nonvolatile memory devices may include a plurality of memory banks, a read global bit line shared by the plurality of memory banks, a write global bit line shared by the plurality of memory banks, a read circuit connected with the read global bit line and performing a read operation, and a discharge control circuit connected with the write global bit line and primarily discharging the write global bit line during an initialization interval after a power-up operation.
Abstract:
A memory device includes a memory cell array including a plurality of memory blocks, each memory block including a plurality of memory cells, a plurality of word lines coupled to rows of the plurality of memory cells, a plurality of bit lines coupled to columns of the plurality of memory cells, and a control unit controlling an erase operation so that erase data is simultaneously written in the plurality of memory cells corresponding to an erase unit. A first erase mode may include a first erase unit and a first erase data pattern. A second erase mode may include a second erase unit and a second erase pattern. At least one of the first and second erase units and the first and second erase data patterns are different.
Abstract:
A memory device includes a first word line extending in a first direction on a substrate, a first bit line extending in a second direction on the first word line, a first memory cell disposed between the first word line and the first bit line, a second word line extending in the first direction on the first bit line, a second bit line extending in the second direction on the second word line, a second memory cell disposed between the second word line and the second bit line, and a first bit line connection structure connected to the first bit line and the second bit line. The first bit line connection structure includes a first bit line contact connected to the first bit line and a second bit line contact, which is connected to the second bit line and vertically overlaps the first bit line contact.
Abstract:
A method of operating a nonvolatile memory device comprises applying a read current with a first level to a nonvolatile memory cell comprising a variable resistance material, determining read data based on the applied read current, checking a syndrome corresponding to the read data to determine whether the read data is pass or fail, changing the read current from the first level to a second level, which is different from the first level, according to the determination of whether the read data is pass or fail, and performing a read-retry operation comprising applying the read current of the second level to the nonvolatile memory cell.