Abstract:
A memory cell includes an input coupled to a read line, an output coupled to a circuit ground, a bi-polar memristor, and at least one address switch coupled to an address line to select the memory cell. A memory includes the bi-polar memristor and a one-way current conducting device, wherein the one-way current conducting device is positioned between the memristor cell output and the circuit ground, or between the read line and the memristor cell input.
Abstract:
In an example, a memristor apparatus with variable transmission delay may include a first memristor programmable to have one of a plurality of distinct resistance levels, a second memristor, a transistor connected between the first memristor and the second memristor, and a capacitor having a capacitance, in which the capacitor is connected between the first memristor and the transistor. In addition, application of a reading voltage across the second memristor is delayed by a time period equivalent to the programmed resistance level of the first memristor and the capacitance of the capacitor.
Abstract:
A push-pull resistive random access memory cell circuit includes an output node, a word line, and first and second bit lines. A first resistive random access memory device is connected between the first bit line and the output node and a second resistive random access memory device is connected between the output node and the second bit line. A first programming transistor has a gate connected to the word line, a drain connected to the output node, and a source. A second programming transistor has a gate connected to the word line, a drain connected to the source of the first programming transistor, and a source. The first and second programming transistors have the same pitch, the same channel length, and the same gate dielectric thickness, the gate dielectric thickness chosen to withstand programming and erase potentials encountered during operation of the push-pull ReRAM cell circuit.
Abstract:
In one example, a volatile selector is switched from a low conduction state to a first high conduction state with a first voltage level and then the first voltage level is removed to activate a relaxation time for the volatile selector. The relaxation time is defined as the time the first volatile selector transitions from the high conduction state back to the low conduction state. The volatile selector is switched with a second voltage level of opposite polarity to the first voltage level to significantly reduce the relaxation time of the volatile selector.
Abstract:
A memory device includes a plurality of resistive memory cells and a plurality of word lines. Each resistive memory cell includes a resistive memory element, a first switching element electrically coupled in series with the resistive memory element, and a second switching element electrically coupled in series with the first switching element. The first switching element and the second switching element in each resistive memory cell is coupled to different ones of the word lines.
Abstract:
A method of operating a memory cell can include applying a select pulse at a gate of a select transistor having a first node and a second node, the first node coupled to the first access terminal of the access device, wherein the second node is coupled to a bit line potential node; charging a capacitor having a first plate and a second plate, the first plate coupled to the first node of the select transistor and to the first access terminal of the access device during the select pulse; activating the access device after charging the capacitor; deactivating the select transistor after activating the access device; and discharging the charged capacitor through the resistive switching device.
Abstract:
A resistance -based memory has a two-diode access device. In a particular embodiment, a method includes biasing a bit line (114) and a sense line (112) to generate a current through a resistance -based memory element (110) via a first diode (116) or a second diode (118). A cathode of the first diode is coupled to the bit line and an anode of the second diode is coupled to the sense line.