3D (Three-dimensional) dynamic random access memory and data storage method

Abstract

The invention discloses a 3D (Three-dimensional) dynamic random access memory, which comprises multiple volatile data storage devices, a main control logic chip and an electric power storage device. An input end of the main control logic chip and the volatile data storage devices are electrically connected into a three-dimensional stack body; an output end of the main control logic chip is electrically connected with the volatile data storage devices; under the power supply of the electric power storage device, the main control logic chip is used for driving data downloaded from the volatile data storage devices to forward and copy to the volatile data storage devices. When the volatile data storage devices are powered off, the main control logic chip already stores the downloaded data into a nonvolatile memory in advance, so that the aim of data storage is achieved. The invention also discloses a data storage method of the 3D dynamic random access memory, wherein the data storage method has the technical effect.

Description

Technical field [0001] The invention relates to the technical field of semiconductor memory, in particular to a 3D dynamic random access memory, and also to a data storage method of the 3D dynamic random access memory. Background technique [0002] At present, DRAM (Dynamic Random Access Memory), that is, dynamic random access memory, is the most common system memory, and the read and write speed of DRAM is much faster than that of solid state drives. However, DRAM can only hold data for a short period of time. In order to retain data, DRAM uses capacitive storage to store data. This method must be refreshed every time. Data is saved every time it is refreshed. If DRAM If it is not refreshed, the stored information will be lost. When the DRAM is powered off, the DRAM cannot be refreshed, which will result in the loss of data in the DRAM. Another reason for easy data loss is that the current DRAM has a small capacity, which leads to easy data loss. [0003] Therefore, how to save ...

AI Technical Summary

Problems solved by technology

However, DRAM can only hold data for a short period of time. In order to keep data, DRAM uses capacitive storage to store data. This method must be refreshed (refresh) once in a while, and data is saved every time it is refreshed. If DRAM If it is not refreshed, the stored information will be lost. When the DRAM is powered off, the DRAM cannot be refreshed, which will cause the data in the DRAM to be lost.

Another reason for easy data loss is that the current DRAM has a small capacity, which makes data easy to lose

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