Patent ID: 7369429
Filing Date: 2008-05-06
Classification: G11C

Abstract:
1. A non-volatile memory device, comprising: a plurality of memory cells arranged in matrix of rows and columns; a plurality of bit lines provided corresponding to memory cell columns respectively and supplied with a first data write current in data writing, each of said memory cells including a plurality of magneto-resistance elements each performing magnetically non-volatile data storage and a switch commonly controlling electrical connection between a corresponding bit line and a fixed voltage through each said magneto-resistance element; and a plurality of digit lines corresponding to said plurality of magneto-resistance elements respectively and supplied with a second data write current in said data writing; wherein each said magneto-resistance element includes a fixed magnetic layer arranged along an easy axis at a prescribed angle to said corresponding bit line and a corresponding digit line, and a free magnetic layer having a magnetic direction reversed with respect to previous data by application of prescribed data write magnetic field, as a result of flow of said first and second data write currents having a prescribed pulse sequence in said corresponding bit line and said corresponding digit line in said data writing.