Patent ID: 6504779
Filing Date: 2003-01-07
Classification: G11C

Abstract:
A resistive cross point memory (RXPtM) device which is responsive to environmental factors including temperature and operating voltage, said device comprising:plural RXPtM cells, each of said RXPtM cells including a pair of magnetic layers one of which is fixed in magnetic orientation, and the other of which is variable in magnetic orientation; a resistive layer interposed between said pair of magnetic layers, so that each of said plural RXPtM cells has a characteristic resistance dependent upon the respective magnetic orientation of said other magnetic layer; a grid of conductors crossing one another at and electrically connecting to respective ones of said pair of magnetic layers of said plural RXPtM cells; a variable-calibration sense amplifier associated with said plural RXPtM cells to sense the resistance of a selected one of said cells; and a calibration controller associated with both said plurality of RXPtM cells and with said sense amplifier, so as to test the calibration of said sense amplifier for sensing selected RXPtM cell in view of existing environmental factors.