摘要:
Disclosed are apparatus and methods for efficiently writing states to one or more magneto-resistive elements. In one embodiment, current switches are provided for directing a write current through a number of write lines to control the write state of the magneto-resistive elements. In another embodiment, a sense current is selectively controlled to control which magneto-resistive elements are written to a particular state. In both embodiments, a latching element may be used to sense the state of the magneto-resistive elements, and may assume a corresponding logic state.
摘要:
In one embodiment, the disclosure includes an air-based geothermal cooling system for a telecom utility cabinet. The air-based geothermal cooling system includes a plurality of heat exchange tubes configured to extend into an underground environment. The air-based geothermal cooling system also includes an input/output (I/O) manifold coupled to the plurality of heat exchange tubes and providing an airway between the plurality of heat exchange tubes and the telecom utility cabinet.
摘要:
A resistive sense memory apparatus includes a bipolar select device having a semiconductor substrate and a plurality of transistors disposed in the semiconductor substrate and forming a row or transistors. Each transistor includes an emitter contact and a collector contact. Each collector contact is electrically isolated from each other and each emitter contact is electrically isolated from each other. A gate contact extends along a channel region between the emitter contact and a collector contact. A base contact is disposed within the semiconductor substrate such that the emitter contact and a collector contact is between the gate contact and the base contact. A resistive sense memory cells is electrically coupled to each collector contact or emitter contact and a bit line.
摘要:
An optical transceiver having an integrated optical time domain reflectometer monitoring unit and methods for using the same are disclosed. The disclosure relates to an optical transceiver comprising an optical device comprising a wavelength division multiplexing system (WDM), a data signal driver, a data signal limiting amplifier, and an optical time domain reflectometer (OTDR) data processing module. Furthermore, the optical transceiver is particularly advantageous in an optical line terminal (OLT) and/or a passive optical network (PON). The integrated OTDR data processing module can protect the optical transceiver, ensure successful monitoring data, simplify network wiring and decrease system and network costs by decreasing the number of OTDR modules and WDM units.
摘要:
In one embodiment, a system includes a telecom utility cabinet and an air-based geothermal cooling system for the telecom utility cabinet. The system also includes a leak detector for the air-based geothermal cooling system. In another embodiment, a method includes detecting a leak in an air-based geothermal cooling system. The method also includes activating a liquid pump for the air-based geothermal cooling system in response to the leak detection.
摘要:
A non-volatile memory cell array and associated method of use. In accordance with various embodiments, the array includes a plurality of programmable resistive sense elements (RSEs) coupled to a shared switching device. The switching device has a common source region and multiple drain regions, each drain region connected to an associated RSE from said plurality of RSEs.
摘要:
A memory array includes a plurality of magneto-resistive changing memory cells. Each resistive changing memory cell is electrically between a source line and a bit line and a transistor electrically between the resistive changing memory cell and the bit line. The transistor has a gate electrically between a source region and a drain region and the source region being electrically between the r magneto-resistive changing memory cell and the gate. A word line is electrically coupled to the gate. A bit line charge accumulation sensing for magneto-resistive changing memory is also disclosed.
摘要:
Magnetic memory having separate read and write paths is disclosed. The magnetic memory unit includes a ferromagnetic strip having a first end portion with a first magnetization orientation, an opposing second end portion with a second magnetization orientation, and a middle portion between the first end portion and the second end portion, the middle portion having a free magnetization orientation. The first magnetization orientation opposes the second magnetization orientation. A tunneling barrier separates a magnetic reference layer from the middle portion forming a magnetic tunnel junction. A bit line is electrically coupled to the second end portion. A source line is electrically coupled to the first end portion and a read line is electrically coupled to the magnetic tunnel junction.
摘要:
A memory unit includes a magnetic tunnel junction data cell is electrically coupled to a bit line and a source line. The magnetic tunnel junction data cell is configured to switch between a high resistance state and a low resistance state by passing a write current through the magnetic tunnel junction data cell. A first diode is electrically between the magnetic tunnel junction data cell and the source line and a second diode is electrically between the magnetic tunnel junction data cell and the source line. The first diode and second diode are in parallel electrical connection, and having opposing forward bias directions. The memory unit is configured to be precharged to a specified precharge voltage level and the precharge voltage is less than a threshold voltage of the first diode and second diode.
摘要:
Method and apparatus for transferring data in a memory. A semiconductor memory includes a plurality of memory cells each having a resistive sense element (RSE) in series with a switching device. A conductive word line extends in a first direction adjacent the memory cells and is connected to a gate structure of each of the switching devices. A plurality of conductive bit lines extend in a second direction adjacent the memory cells, each bit line providing a connection node that interconnects a respective pair of the memory cells. A control circuit senses a programmed state of a selected memory cell by setting each of the bit lines on a first side of the selected memory cell to a first voltage level, setting each of the remaining bit lines on an opposing second side of the selected memory cell to a second voltage level, and setting the word line to a third voltage level.