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Read-write method and memory device

A read-write method and memory technology, applied in static memory, memory systems, instruments, etc., can solve problems such as reduced lifespan and reduced reliability of semiconductor memory devices, so as to prolong life, avoid data errors or data loss, and improve reliability Effect

Active Publication Date: 2021-10-12
CHANGXIN MEMORY TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the increase of circuit complexity, various forms of memory devices are inevitably prone to defective or damaged memory cells during manufacturing or use, resulting in reduced reliability and reduced lifespan of semiconductor memory devices

Method used

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Embodiment Construction

[0036] The specific implementations of the reading and writing method and the memory device provided by the present invention will be described in detail below in conjunction with the accompanying drawings.

[0037] A common method for improving the reliability of a memory device is to encode data into an error correction code (Error Correction Code, ECC) before writing the data into the memory device, and simultaneously store the data and the ECC in the memory device. When reading, the data and the error correction code are read at the same time, and the error correction code is decoded to restore the data that may have occurred in error.

[0038] However, the inventors have found that the error correction code can only correct the data when the data is read out, and the memory cells with data errors still exist in the memory. If in the subsequent data storage process, at least one storage unit with data error appears in the storage segment corresponding to the storage unit w...

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Abstract

The invention provides a read-write method and a memory device. The read-write method comprises the following steps that a read command is applied to the memory device, the read command points to address information, data to be read are read from a memory unit corresponding to the address information pointed by the read command, and if the data to be read have errors, the address information pointed by the read command is associated with a standby memory unit. According to the read-write method, the reliability of the memory device is greatly improved, and the service life of the memory device is prolonged.

Description

technical field [0001] The invention relates to the field of semiconductor storage, in particular to a reading and writing method and a storage device. Background technique [0002] Semiconductor memory is a memory component used to store various data information. With the increase of circuit complexity, various forms of memory devices inevitably produce defective or damaged memory cells during manufacturing or use, resulting in reduced reliability and shortened lifespan of semiconductor memory devices. [0003] Therefore, how to improve the reliability of the memory device and extend the life of the memory device has become an urgent problem to be solved. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a read-write method and a memory device, which can greatly improve the reliability of the memory device and prolong the life of the memory device. [0005] The present invention provides a reading and writing me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06G06F11/10G06F11/14G06F12/0802G06F12/0882
CPCG06F3/0616G06F3/0619G06F3/064G06F3/0679G06F11/1448G06F11/1004G06F12/0802G06F12/0882G06F11/1044G11C29/18G11C29/42G11C29/4401G11C29/76G11C2029/0409G11C2029/0411G11C29/52Y02D10/00G11C29/702
Inventor 寗树梁
Owner CHANGXIN MEMORY TECH INC