Patent ID: 6912174
Filing Date: 2005-06-28
Classification: G11C

Abstract:
1. A thin film magnetic memory device comprising: a plurality of memory regions, arranged in a column direction, each having a plurality of memory cells arranged in a matrix, wherein each of said memory regions includes: a plurality of bit lines provided in correspondence with memory cell columns, respectively; a first driver band arranged in a first direction of said plurality of bit lines, and supplied with power for supplying a data write current to at least one bit line among said plurality of bit lines; and a second driver band arranged in a second direction opposite to said first direction of said plurality of bit lines, and supplied with the power for supplying said data write current to at least one bit line among said plurality of bit lines, said thin film magnetic memory device further comprises: a first pair of power supply line, arranged in the column direction, for supplying the power to said first driver band from said first direction; and a second pair of power supply line, arranged in the column direction, for supplying the power to said second driver band from said second direction, each of said first and second pair of power supply lines includes first and second power lines supplying a first voltage and a second voltage, respectively, and when data is written, the first driver band corresponding to the selected memory region selected by an externally applied address designation among said plurality of memory regions is connected to one of the first and second power lines of said first pair of power supply line in accordance with written data, and the second driver band corresponding to said selected memory region is connected to the other one of said first and second power lines of said second pair of power supply line in accordance with said written data.