摘要:
A variable resistance memory device may include first and second memory cells connected to different lengths of bit lines, respectively, and a select circuit, configured to select the first and second memory cells, which is connected to the first and second memory cells through word lines. The select circuit is configured to compensate for a difference of resistances in the different of the lengths of the bit lines.
摘要:
A resistance change memory device includes an array of resistance change memory cells, and a writing circuit configured to reset a selected memory cell to a high resistance state by supplying a RESET current to the selected memory cell in the array of resistance change memory cells in a program operation mode, wherein a level of the RESET current depends on a distribution of initial RESET currents for the array of resistance change memory cells.
摘要:
A method of programming a resistance variable memory cell to a given logic state includes applying a first programming current to the memory cell, executing a verify read of the memory cell by sensing a logic state of the memory cell, and applying a second programming current to the memory cell when the sensed logic state is different than the given logic state, where the second programming current is greater than the first programming current
摘要:
A resistive memory device and a sensing margin trimming method are provided. The resistive memory device includes a memory cell array and a trimming circuit. The memory cell array has a plurality of resistive memory cells. The trimming circuit generates a trimming signal according to a characteristic distribution shift value of the resistive memory cells. With the inventive concept, although a characteristic distribution of memory cells is varied, an erroneous read operation is minimized or reduced by securing a sensing margin stably. Accordingly, a fabrication yield of the resistive memory device is bettered.
摘要:
A method of programming a resistance variable memory cell to a given logic state includes applying a first programming current to the memory cell, executing a verify read of the memory cell by sensing a logic state of the memory cell, and applying a second programming current to the memory cell when the sensed logic state is different than the given logic state, where the second programming current is greater than the first programming current.
摘要:
A method of programming a resistance variable memory cell to a given logic state includes applying a first programming current to the memory cell, executing a verify read of the memory cell by sensing a logic state of the memory cell, and applying a second programming current to the memory cell when the sensed logic state is different than the given logic state, where the second programming current is greater than the first programming current.
摘要:
Provided is a variable resistance memory device. The variable resistance memory device may include first and second memory cells connected to different lengths of bit lines, respectively, and a select circuit, configured to select the first and second memory cells, which is connected to the first and second memory cells through word lines. The select circuit is configured to compensate for a difference of resistances in the different of the lengths of the bit lines.
摘要:
The present invention relates to forming the material represented by the following formula (1) into a layer having hexagonal crystalline structure, which is different from the orthorhombic crystalline structure of the material in bulk phase, so that the material can be used more effectively in various fields requiring multiferroic properties by obtaining multiferroic properties enhanced than the conventional multiferroic materials. RMnO3, (R=Lanthanide) . . . (1)
摘要:
The present invention relates to forming the material represented by the following formula (1) into a layer having hexagonal crystalline structure, which is different from the orthorhombic crystalline structure of the material in bulk phase, so that the material can be used more effectively in various fields requiring multiferroic properties by obtaining multiferroic properties enhanced than the conventional multiferroic materials. RMnO3, (R=Lanthanide) . . . (1)
摘要:
A memory system, and an operation method of a nonvolatile memory, include programming memory cells using a normal program pulse, reading out a first set of data from the memory cells, detecting failed cells based on the first set of data, storing information about the failed cells in a buffer, and reprogramming the failed cells using a reinforced program pulse in an idle state based on the information stored in the buffer.