Patent ID: 6950334
Filing Date: 2005-09-27
Classification: G11C

Abstract:
1. A magnetic random access memory comprising: a memory cell array in which magneto-resistive elements are arranged in a matrix; a write word line arranged on each row of the memory cell array; a write bit line arranged on each column of the memory cell array; a first driver and second driver which are connected to one end of the write word lines respectively, the second driver having a higher driving capability than the first driver; a first sinker which is connected to the other end of the write word lines; a pair of third drivers one of which is connected to the write bit lines at one end thereof and the other of which is connected to the write bit lines at the other end thereof; a pair of fourth drivers one of which is connected to the write bit lines at one end thereof and the other of which is connected to the write bit lines at the other end thereof, the pair of fourth drivers having a higher driving capability than the pair of third driver; a pair of second sinkers one of which is connected to the write bit lines at one end thereof and the other end of which is connected to the write bit lines at the other end thereof; a first circuit configured to cause the second driver and first sinker to write information in a plurality of memory cells at a time by a one-axis write in an axis of hard magnetization; and a second circuit configured to cause one of the fourth drivers and one of second sinkers to write information in a plurality of memory cells by a one-axis write in an axis of easy magnetization and simultaneously supply a larger current than that in a two-axis write in a normal operation.