Patent ID: 7944730

Claim:
A method of writing to a resistive sense memory unit, comprising: applying a first voltage across a resistive sense memory cell and a transistor to write a first data state to the resistive sense memory cell, the first voltage forming a first write current for a first time duration through the resistive sense memory cell in a first direction; applying a second voltage across the resistive sense memory cell and the transistor to write a second data state to the resistive sense memory cell, the second voltage forming a second write current for a second time duration through the resistive sense memory cell in a second direction, the second direction opposing the first direction, the first voltage having a different value than the second voltage, and the first time duration being substantially the same as the second time duration; wherein the resistive sense memory cell and the transistor are in serial electrical contact and the resistive sense memory cell is in electrical contact with a bitline and the transistor is in electrical contact with a sourceline, and the transistor has a gate in electrical contact with a wordline and the first voltage is greater than the second voltage and the first voltage comprises a sourceline voltage being greater than a bitline voltage.