摘要:
A word line driving method is for a nonvolatile memory device including a plurality of memory blocks having a plurality of strings which is formed in a direction perpendicular to a substrate and connected between bit lines and a common source line. The method includes applying an offset pulse to a word line for a predetermined time to shorten a word line setting time, and applying a target pulse having a level which is higher or lower than a level of the offset pulse to the word line after the predetermined time.
摘要:
A method of programming a nonvolatile memory device comprises performing an N-th program loop based on state data stored in data latches according to a default state ordering, determining whether conversion of the default state ordering is required according to a predetermined criterion, as a consequence of determining that conversion of the default state ordering is required, converting all or part of the state data stored in the data latches from the default state ordering to another state ordering, and performing a (N+1)th program loop based on the converted state data.
摘要:
A nonvolatile memory device includes a memory cell array, a page buffer unit which output a verify-read result, a reference current generating unit which generates a reference current signal, a page buffer decoding unit which outputs currents according to the verify-read result. The nonvolatile memory device further includes an analog bit counting unit which counts the currents, a digital adding unit which calculates an accumulated sum of the counting result, a pass/fail checking unit which outputs a pass signal or fail signal according to the calculation result, and a control unit controlling a program operation.
摘要:
A three-dimensional (3D) flash memory includes a first dummy word line disposed between a ground select line and a lowermost main word line, and a second dummy word line of different word line configuration disposed between a string select line and an upper most main word line.
摘要:
A nonvolatile memory device comprises a plurality of vertical NAND flash memory cells arranged in a three dimensional (3D) structure, a first memory block disposed in the 3D structure and having memory cells selected by a first ground selection line and a second ground selection line, wherein the first and second ground selection lines are electrically separated from each other, a second memory block disposed in the 3D structure and having memory cells selected by a third selection line and fourth selection line, wherein the third and fourth ground selection lines are electrically separated from each other, and a pass transistor that transfers a driving signal to turn on ground selection transistors respectively connected to the first and third ground selection lines in response to a block selection signal.
摘要:
A method is provided for driving a nonvolatile memory device, including multiple strings, where each string is formed by penetrating plate-shaped word lines stacked on a substrate. The method includes configuring the word lines of a string in multiple zones based on zone configuration information, and applying zone voltages to the zones, respectively. The zone configuration information is varied according to a mode of operation.