Abstract:
In a method of driving a nonvolatile memory device a first data state is determined from among the plurality of data states. The number of simultaneously programmed bits is set according to the determined first data state and a scanning operation is performed on data input from an external device to search data bits to be programmed. The searched data bits are programmed in response to the number of simultaneously programmed bits. The number of simultaneously programmed bits corresponding to the first data state is different from a number of simultaneously programmed bits corresponding to at least a second of the plurality of data states.
Abstract:
A memory system includes a controller that generates a processor clock, and a plurality of memory devices each including an internal clock generator that generates an internal clock in synchronization with the processor clock, and a memory that performs a peak current generation operation in synchronization with the internal clock, wherein at least two of the memory devices generate their respective internal clocks at different times such that the corresponding peak current generation operations are performed at different times.
Abstract:
A flash memory management method is provided. According to the method, when a request to write the predetermined data to a page to which data has been written is made, the predetermined data is written to a log block corresponding to a data block containing the page. When a request to write the predetermined data to the page again is received, the predetermined data is written to an empty free page in the log block. Even if the same page is requested to be continuously written to, the management method allows this to be processed in one log block, thereby improving the effectiveness in the use of flash memory resources.
Abstract:
A memory management method and apparatus based on an access time in a multi-core system. In the memory management method of the multi-core system, it is easy to estimate the execution time of a task to be performed by a processing core and it is possible to secure the same memory access time when a task is migrated between processing cores by setting a memory allocation order according to distances from the processing cores to the memories in correspondence with the processing cores, translating a logical address to be processed by one of the processing cores according to the set memory allocation order into a physical address of one of the memories, and allocating a memory corresponding to the translated physical address to the processing core.
Abstract:
A memory management method and apparatus based on an access time in a multi-core system. In the memory management method of the multi-core system, it is easy to estimate the execution time of a task to be performed by a processing core and it is possible to secure the same memory access time when a task is migrated between processing cores by setting a memory allocation order according to distances from the processing cores to the memories in correspondence with the processing cores, translating a logical address to be processed by one of the processing cores according to the set memory allocation order into a physical address of one of the memories, and allocating a memory corresponding to the translated physical address to the processing core.
Abstract:
A flash memory device includes a program data buffer configured to buffer program data to be programmed in a memory cell array, and a verify data buffer configured to compare verify data to confirm whether the program data is accurately programmed in the memory cell array, wherein at least a portion of the verify data buffer is selectively enabled as a verify data buffer or a program data buffer responsive to a buffer control signal.