摘要:
The layout method for a semiconductor device includes locating a plurality of first bit line selection circuits at a first side of a variable resistive memory cell block, and locating a plurality of second bit line selection circuits at a second side of the variable resistive memory cell block opposite the first side. The method further includes connecting the first bit line selection circuits with respective odd-numbered local bit lines of the variable resistive memory cell block, and connecting the second bit line selection circuits with respective even-numbered local bit lines of the variable resistive memory cell block. The method still further includes selectively connecting respective odd-numbered local bit lines to a global bit line using the first bit line selection circuits, and selectively connecting respective even-numbered local bit lines to the global bit line using the second bit line selection circuits.
摘要:
A phase change memory device includes a phase change memory cell block having alternating odd-numbered and even-numbered local bit lines, a global bit line, a plurality of first bit line selection circuits, and a plurality of second bit line selection circuits. The plurality of first bit line selection circuits are located at a first side of the phase change memory cell block and selectively connect respective odd-numbered local bit lines to the global bit line. The plurality of second bit line selection circuits are located at second side of the phase change memory cell block (opposite the first side) and selectively connect respective even-numbered local bit lines to the global bit line.
摘要:
The layout method for a semiconductor device includes locating a plurality of first bit line selection circuits at a first side of a variable resistive memory cell block, and locating a plurality of second bit line selection circuits at a second side of the variable resistive memory cell block opposite the first side. The method further includes connecting the first bit line selection circuits with respective odd-numbered local bit lines of the variable resistive memory cell block, and connecting the second bit line selection circuits with respective even-numbered local bit lines of the variable resistive memory cell block. The method still further includes selectively connecting respective odd-numbered local bit lines to a global bit line using the first bit line selection circuits, and selectively connecting respective even-numbered local bit lines to the global bit line using the second bit line selection circuits.
摘要:
A phase change memory device includes a phase change memory cell block having alternating odd-numbered and even-numbered local bit lines, a global bit line, a plurality of first bit line selection circuits, and a plurality of second bit line selection circuits. The plurality of first bit line selection circuits are located at a first side of the phase change memory cell block and selectively connect respective odd-numbered local bit lines to the global bit line. The plurality of second bit line selection circuits are located at second side of the phase change memory cell block (opposite the first side) and selectively connect respective even-numbered local bit lines to the global bit line.
摘要:
Provided is a method of testing a phase change random access memory (PRAM). The method may include providing a plurality of PRAM cells each coupled between each of a plurality of first lines and each of a plurality of second lines intersecting the first lines, selecting at least one of the plurality of first lines while deselecting the remaining first lines and the plurality of second lines, pre-charging the selected at least one of the plurality of first lines to a predetermined or given voltage level, and sensing a change in the voltage level of the selected first line while supplying a monitoring voltage to the selected first line.
摘要:
A phase-change memory device is provided. The phase-change memory device includes a phase-change memory cell array including a first memory block having a plurality of phase-change memory cells each connected between each of a plurality of bit lines and a first word line, a second memory block having a plurality of phase-change memory cells each connected between each of the plurality of bit lines and a second word line, and first and second pull-down transistors pulling-down each voltage level of the first and the second word lines and sharing a node and a row driver including a first and a second pull-up transistor pulling-up each voltage level of the first and the second word lines.
摘要:
Provided is a method of testing a phase change random access memory (PRAM). The method may include providing a plurality of PRAM cells each coupled between each of a plurality of first lines and each of a plurality of second lines intersecting the first lines, selecting at least one of the plurality of first lines while deselecting the remaining first lines and the plurality of second lines, pre-charging the selected at least one of the plurality of first lines to a predetermined or given voltage level, and sensing a change in the voltage level of the selected first line while supplying a monitoring voltage to the selected first line.
摘要:
A phase-change memory device is provided. The phase-change memory device includes a phase-change memory cell array including a first memory block having a plurality of phase-change memory cells each connected between each of a plurality of bit lines and a first word line, a second memory block having a plurality of phase-change memory cells each connected between each of the plurality of bit lines and a second word line, and first and second pull-down transistors pulling-down each voltage level of the first and the second word lines and sharing a node and a row driver including a first and a second pull-up transistor pulling-up each voltage level of the first and the second word lines.
摘要:
Provided are a phase-change memory device and method that maintains a resistance of a phase-change material in a set state within a constant resistance range. In the method, data is provided to a first phase-change memory cell and then it is first determined whether data stored in the first phase-change memory cell and the data provided to the first phase-change memory cell are identical. If the data stored in the first phase-change memory cell and the data provided to the first phase-change memory cell are not identical, a complementary write current is provided to the first phase-change memory cell and it is second determined whether the data stored in the first phase-change memory cell and the data provided to the first phase-change memory cell are identical. If the data stored in the first phase-change memory cell and the data provided to the first phase-change memory cell are identical, data is provided to a second phase-change memory cell.
摘要:
A phase-change random access memory (PRAM) device capable of reducing a resistance of a word line may include a plurality of main word lines of a semiconductor memory device or PRAM bent n times in a layer different from a layer in which a plurality of sub-word lines are disposed. The semiconductor memory device or PRAM may further include jump contacts for connecting the plurality of cut sub-word lines. In a PRAM device including the plurality of main word lines and the plurality of sub-word lines being in different layers, the number of jump contacts for connecting the plurality of main word lines to a transistor of a sub-word line decoder is the same in each sub-word line or the plurality of main word lines are bent several times so that a parasitic resistance on a word line and power consumption may be reduced, and a sensing margin may be increased.