Demonstration system for phase-change memory cell array and visual demonstration method therefor

Abstract

The related member array demo system for a phase-change memory comprises: a control computer; a SCM as the system core; a pulse signal generator; a control circuit board with circuits for addressing, switch, reading, and display; an array chip of a phase-change memory; and a conversion and connection member. Wherein, the computer communicates with the SCM by self RS232 interface for receiving andsending the command and data; the SCM controls peripheral circuits. The opposite demo method comprises data access, reading and calculation.

Description

technical field [0001] The invention relates to a phase-change memory device unit array demonstration system and a visual demonstration method, belonging to the technical field of micro-nano electronics. Background technique [0002] Phase-change memory technology is based on the idea that phase-change thin films can be applied to phase-change storage media proposed by Ovshinsky in the late 1960s (Phys. Rev. Lett., 21, 1450-1453, 1968). Phase-change memory can be made on a silicon wafer substrate, and its key materials are recordable phase-change films, heating electrode materials, heat insulating materials, and lead-out electrode materials. The basic principle of phase change memory is to use electric pulse signal to act on the device unit, so that the phase change material undergoes reversible phase transition between amorphous state and polycrystalline state. By distinguishing the high resistance in the amorphous state and the polycrystalline state The low resistance can...

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Problems solved by technology

At the same time, the realization and visual characterization of phase change memory storage performance are also key steps in the research process. At present, the only standard for judging the state of a device unit is to measure its resistance value, which cannot achieve intuitive visual operation. Therefore, a set of devices that can complete The operating system for the selective storage operation of the unit, the operation of the stored data, and the visual display of the data state, that is, the demonstration system of the device unit array

However, since phase change memory is still in the research and development stage, there is no relevant standard demonstration system at home and abroad. Therefore, the present invention proposes a set of storage demonstration system for phase change memory device cell arrays.

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