Abstract:
A refresh leveraging driving method is provided which includes deciding a unit of word lines to be driven at a refresh leveraging operation to be the same as a redundancy repair row unit setting a lower row address of an input refresh leveraging address corresponding to the decided refresh leveraging row driving unit to a don't care state; and internally generating the don't care lower row address of the refresh leveraging address to drive word lines according to a combined refresh leveraging address.
Abstract:
An operation method of a memory controller, which is configured to control a memory module including a plurality of memory devices and at least one error correction code (ECC) device, is provided. The method includes reading a data set including user data stored in the plurality of memory devices and ECC data stored in the at least one ECC device, based on a read command and a first address, and writing uncorrectable data in a memory area, which is included in each of the plurality of memory devices and the at least one ECC device and corresponds to the first address, when an error of the user data is not corrected based on the ECC data.
Abstract:
A semiconductor memory device includes a memory cell array, sub word-line drivers and power selection switches. The memory cell array includes memory cell rows coupled to word lines. The sub word line drivers are coupled to the word lines. The power selection switches are coupled to the sub word-line drivers. Each power selection switch controls a deactivation voltage level of a first word-line activated from the word-lines and an off-voltage level of a second word line adjacent to the first word line so that the deactivation voltage level and the off-voltage level have at least one of a ground voltage, a first negative voltage and a second negative voltage. The ground voltage, the first negative voltage and the second negative voltage have different voltage levels from each other.
Abstract:
According to an exemplary embodiment, a memory device may include a memory cell array that includes memory cells connected to word lines arranged in sequential order depending on a sequential change of a row address, a row decoder that, for each row address input to the row decoder, scrambles a first bit of the row address and a second bit of the row address depending on a selection signal, thereby forming a scrambled row address, decodes the scrambled row address, and selects the a word line from the word lines based on the scrambled row address, and an anti-fuse array that includes an anti-fuse in which a logical value of the selection signal is programmed. A first word line and a second word line of the word lines may be adjacent to each other, and a difference between a first value of the row address corresponding to the first word line and a second value of the row address corresponding to the second word line may be a value corresponding to the first bit.
Abstract:
A memory system includes a processor that includes cores and a memory controller, and a first semiconductor memory module that communicates with the memory controller. The cores receive a call to perform a first exception handling in response to detection of a first error when the memory controller reads first data from the first semiconductor memory module. A first monarchy core of the cores performs the first exception handling and the remaining cores of the cores return to remaining operations previously performed.
Abstract:
A memory system includes a nonvolatile memory module and a first controller configured to control the nonvolatile memory module. The nonvolatile memory module includes a volatile memory device, a nonvolatile memory device, and a second controller configured to control the volatile memory device and the nonvolatile memory device. The first controller may be configured to transmit a read request to the second controller. When, during a read operation according to the read request, normal data is not received from the nonvolatile memory device, the first controller may perform one or more retransmits of the read request to the second controller without a limitation on a number of times that the first controller performs the one or more retransmits of the read request.