Patent ID: 7885096
Filing Date: 2011-02-08
Classification: G11C

Abstract:
1. A semiconductor device comprising: a plurality of memory cells each storing data by being magnetized in a direction corresponding to an applied data write magnetic field; a plurality of bit lines arranged corresponding to predetermined sections of said plurality of memory cells, respectively; and data write circuits for supplying, in a direction corresponding to write data, a data write current producing said data write magnetic field to at least one of said plurality of bit lines, wherein said data write circuit includes a plurality of first drive circuits arranged corresponding to said plurality of bit lines, respectively, and each configured to drive a voltage on one end side of the corresponding bit line, said plurality of bit lines are divided into a plurality of groups, each of said plurality of groups has said bit lines of X (X: integer larger than one) in number electrically coupled on the other end side via a short-circuit node, said data write circuit further includes a plurality of second drive circuits arranged corresponding to said plurality of groups for driving voltages on said corresponding short-circuit nodes, respectively, at least one of said plurality of first drive circuits corresponding to a selected memory cell drives the corresponding one end side with one of first and second voltages according to said write data, and at least one of said plurality of second drive circuits corresponding to said selected memory cell drives the corresponding short-circuit node with the other of said first and second voltages according to said write data.