Patent ID: 8830737
Filing Date: 2014-09-09
Classification: G11C

Abstract:
1. A method of determining a resistance value of a magnetic tunnel junction (MTJ) in a circuit including more than one MTJ comprising: activating a word line (WL) coupled to a gate of an access transistor, the access transistor being coupled to an end of a MTJ, the MTJ having a resistance associated therewith; activating a word line, WLx, that is coupled to a gate of a test transistor, the test transistor being coupled to a bit line (BL) and to a ‘testout’ pad, the BL being coupled to the opposite end of the MTJ; measuring a voltage, Vn, of the BL through the ‘testout’ pad; determining a voltage, V applying a current from an external source, the applied current being controllable externally to the circuit; measuring the applied current; and using the measured applied current, Vn, and V