Patent ID: 9147458
Filing Date: 2015-09-29
Classification: G11C

Abstract:
1. A magnetic random access memory comprising: first and second bit lines; a common source line; a first cell unit including a first magnetoresistive element connected between the first bit line and the common source line; a second cell unit including a second magnetoresistive element connected between the second bit line and the common source line; a write circuit to write complementary data to the first and second magnetoresistive elements in the first and second cell units; a read circuit to read the complementary data from the first and second magnetoresistive elements in the first and second cell units; and a control circuit that is configured to: change the first and second bit lines to a floating state after setting the first and second bit lines to a first potential; change a potential of the first bit line in the floating state to a first value in accordance with a resistance value of the first magnetoresistive element and a potential of the second bit line in the floating state to a second value in accordance with a resistance value of the second magnetoresistive element by setting the common source line to a second potential different from the first potential; and control the read circuit so that the read circuit detects a difference between the first value of the potential of the first bit line in the floating state and the second value of the potential of the second bit line in the floating state.