摘要:
A magnetoresistive random access memory (MRAM) is embedded with another circuit type. Logic, such as a processing unit, is particularly well-suited circuit type for embedding with MRAM. The embedding is made more efficient by using a metal layer that is used as part of the interconnect for the other circuit also as part of the MRAM cell. The MRAM cells are all written by program lines, which are the two lines that cross to define a cell to be written. Thus, the design is simplified because there is commonality of usage of the metal line that is used for one of the program lines for the MRAM and for one of the interconnect lines for the logic.
摘要:
Magnetoelectronic memory element structures and methods for making such structures using a barrier layer as a material removal stop layer are provided. The methods comprise forming a digit line disposed at least partially within a dielectric layer. The dielectric material layer overlies an interconnect stack. A void space is etched in the dielectric layer to expose the interconnect stack. A conductive-barrier layer having a first portion and a second portion is deposited. The first portion overlies the digit line and the second portion is disposed within the void space and in electrical communication with the interconnect stack. A memory element layer is formed overlying the first portion and an electrode layer is deposited overlying the memory element layer. The electrode layer and the memory element layer are then patterned and etched.
摘要:
A method of manufacturing a magnetoelectronic device includes providing an electrically conducting material and an electrically insulating material adjacent to at least a portion of the electrically conducting material, and implanting a magnetic material into the electrically insulating material. The magnetic material increases the magnetic permeability of the electrically insulating material. The implant may be a blanket or a targeted implant.
摘要:
A memory device, such an MRAM device, includes self-healing reference bits (104) associated with a set of array bits (102). The memory performs an error detection step (e.g., using an error-correction coding (ECC) algorithm, to detect the presence of a set of errors within the data bits. One of the reference bits (104) is toggled to a different state if an error count is greater than a predetermined threshold. If the set of errors remains unchanged when subsequently read, the reference bit (104) is toggled back to its original state.
摘要:
A method for fabricating a flux concentrating system (62) for use in a magnetoelectronics device is provided. The method comprises the steps of providing a bit line (10) formed in a substrate (12) and forming a first material layer (24) overlying the bit line (10) and the substrate (12). Etching is performed to form a trench (58) in the first material layer (24) and a cladding layer (56) is deposited in the trench (52). A buffer material layer (58) is formed overlying the cladding layer (56) and a portion of the buffer material layer (58) and a portion of the cladding layer (56) is removed.
摘要:
A method for fabricating a flux concentrating system (62) for use in a magnetoelectronics device is provided. The method comprises the steps of providing a bit line (10) formed in a substrate (12) and forming a first material layer (24) overlying the bit line (10) and the substrate (12). Etching is performed to form a trench (58) in the first material layer (24) and a cladding layer (56) is deposited in the trench (52). A buffer material layer (58) is formed overlying the cladding layer (56) and a portion of the buffer material layer (58) and a portion of the cladding layer (56) is removed.
摘要:
Techniques of sensing a temperature of a heat source disposed in a substrate of an integrated circuit are provided. According to one exemplary method, a Magnetic Tunnel Junction (“MTJ”) temperature sensor is provided over the heat source. The MTJ temperature sensor comprises an MTJ core configured to output a current during operation thereof. The value of the current varies based on a resistance value of the particular MTJ core. The resistance value of the MTJ core varies as a function of the temperature of the heat source. A value of the current of the MTJ core can then be associated with a corresponding temperature of the heat source.
摘要:
An integrated circuit device includes a magnetic random access memory (“MRAM”) architecture and at least one inductance element formed on the same substrate using the same fabrication process technology. The inductance element, which may be an inductor or a transformer, is formed at the same metal layer (or layers) as the program lines of the MRAM architecture. Any available metal layer in addition to the program line layers can be added to the inductance element to enhance its efficiency. The concurrent fabrication of the MRAM architecture and the inductance element facilitates an efficient and cost effective use of the physical space available over active circuit blocks of the substrate, resulting in three-dimensional integration.
摘要:
Fabricating a magnetoresistive random access memory cell and a structure for a magnetoresistive random access memory cell begins by providing a substrate having a transistor formed therein. A contact element is formed electrically coupled to the transistor and a dielectric material is deposited within an area partially bounded by the contact element. A digit line is formed within the dielectric material, the digit line overlying a portion of the contact element. A conductive layer is formed overlying the digit line and in electrical communication with the contact element.
摘要:
An MRAM is provided that minimizes the limits in MRAM density imposed by utilization of an isolation or select device in each memory cell. In addition, methods are provided for reading an MTJ in a ganged memory cell of the MRAM. The method includes determining an electrical value that is at least partially associated with a resistance of a ganged memory cell of the MRAM. The MTJ in the ganged memory cell is toggled and a second electrical value, which is at least partially associated with the resistance of the ganged memory cell, is determined after toggling the MTJ. Once the electrical value prior to the toggling and after the toggling is determined, the difference between the two electrical values is analyzed to determine the value of the MTJ.