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Cascade system and method of RRAM logic device

A logic device and device technology, applied in the field of cascaded systems of RRAM logic devices, to achieve the effect of reducing scale and complexity

Active Publication Date: 2013-10-02
PEKING UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

[0006] The invention provides a cascading system and method of RRAM logic devices to solve the problem of connecting and transmitting signals between RRAM devices

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  • Cascade system and method of RRAM logic device

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Embodiment Construction

[0034] A cascading system and method for RRAM logic devices proposed by the present invention will be described in detail below with reference to the drawings and embodiments.

[0035] Since the signals transmitted between RRAM logic units are voltage signals, and RRAM devices show different resistance states after set and reset, this is different from the current mainstream logic device CMOS; CMOS circuits only need to realize voltage transmission , and the realization of the logic device of RRAM needs to be able to guarantee the conversion between two different domains of resistance and voltage. In the present invention, a current source is used to realize the conversion of a resistive state to a voltage form signal.

[0036] The input voltage of a single RRAM logic unit is the establishment voltage (set) and the reset voltage (reset). The variation range of the establishment voltage and the reset voltage is within 1 order of magnitude, while the output is the resistance st...

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Abstract

The invention provides a cascade method of a RRAM logic device. The cascade method comprises following steps: step 1, a RRAM device is subjected to a voltage signal to make the RRAM device stay in a high-impedance state; step 2, the resistance value of the RRAM device is read through a constant flow source, and the amplified voltage of the RRAM device is also obtained; step 3, the amplified voltage of the RRAM device is reduced and transformed to a reduced voltage corresponding to the voltage signal, and the reduced voltage is transformed to the next RRAM device. The cascade method of a RRAM logic device solves the problems of connecting and signal-transmitting between the RRAM devices, and provides necessary support for RRAM to become a new logic device. A cascade system o f RRAM logic device is also provided.

Description

technical field [0001] The invention relates to the technical field of semiconductor integrated circuits and its manufacture, in particular to a cascade system and method of RRAM logic devices. Background technique [0002] The reduction of device size and the improvement of integration are the development direction of integrated circuits. Traditional ICs usually use CMOS as the basic logic unit to implement information processing and storage functions. However, with the improvement of technology, due to the existence of secondary effects in the process of device size reduction, the reduction of the feature size of MOS transistors encounters a bottleneck. [0003] At present, a new type of non-volatile memory using resistance changes has the advantages of high speed (<5ns), low operating voltage (<1V), high storage density, and easy integration, and has become a strong competitor for the next generation of semiconductor memory; Such devices, known as "resistive variab...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11C11/56
Inventor 康晋峰李秀红龙云高滨陈冰
Owner PEKING UNIV