摘要:
Disclosed is a method of driving a multi-level variable resistive memory device. A method of driving a multi-level variable resistive memory device includes supplying a write current to a variable resistive memory cell so as to change resistance of the variable resistive memory cell, verifying whether or not changed resistance enters a predetermined resistance window, the intended resistance window depending on the resistance of reference cells, and supplying a write current having an increased or decreased amount from the write current supplied most recently on the basis of the verification result so as to change resistance of the variable resistive memory cell.
摘要:
A semiconductor package having a structure in which heat produced in the interior of the package is effectively spread to the outside of the package is provided. The semiconductor package includes one or more semiconductor chips, one or more substrates (PCBs) having the semiconductor chips respectively attached thereto, a plurality of conductive balls such as a plurality of solder balls to provide voltages and signals to the one or more semiconductor chips, and a heat sink positioned to spread heat produced in the interior of the package to the outside and directly connected to at least one of the plurality of solder balls.