Patent ID: 6522577
Filing Date: 2003-02-18
Classification: G11C

Abstract:
An MRAM memory device, the device comprising:an array of MRAM memory cells, each of the MRAM memory cells comprising a magnetically susceptible element capable of sustaining a local magnetic field, the magnetically susceptible element disposed at an intersection of a row line and a column line of the array of MRAM memory cells; an electromagnetic device disposed adjacent to the array of MRAM memory cells so that poles of a generated magnetic field produced by the electromagnetic device lie in a plane parallel with a plane containing the array of MRAM memory cells and disposed in proximity to the array of MRAM memory cells so that the generated magnetic field produced in response to current applied to control lines of the electromagnetic device can affect the local magnetic field sustained by each of the MRAM memory cells; and an electromagnetic control device receiving memory control signals, the electromagnetic control device controlling a magnitude and a polarity of the generated magnetic field by regulating the current applied to the control lines of the electromagnetic device in response to the memory control signals.