Memory storage device, memory controller and data writing method

Abstract

A memory storage device, a memory controller and a data writing method. The memory storage device comprises a rewritable non-volatile memory chip with a plurality of entity units, and each entity unit comprises a plurality of entity pages. The method includes steps of: configuring multiple logic units to map part of the entity units, wherein each logic unit comprises a plurality of logical pages; receiving first write data from a host system and writing the first write data into a No. i entity page of a replacement entity unit extracted from the entity units; and writing first address access information corresponding to the first write data and second address access information into the No. i entity page, wherein i represents a positive integer.

Description

technical field [0001] The invention relates to a method for writing data, and in particular to a method for backing up data when writing data, as well as a memory storage device and a memory controller for implementing the method. Background technique [0002] Rewritable non-volatile memory (rewritable non-volatile memory) has the characteristics of data non-volatility, power saving, small size and no mechanical structure, so it is widely used in various electronic devices. Among them, a solid state drive (SSD) is a storage device that uses a rewritable non-volatile memory as a storage medium, and has attracted more and more attention from consumers because of its advantages above. [0003] The rewritable non-volatile memory has multiple physical blocks, and each physical block has multiple physical pages. Wherein, the physical block is the smallest unit of data erasing, and the physical page is the smallest unit of data writing. The memory management circuit in the stora...

AI Technical Summary

Problems solved by technology

However, if a data error is found when the solid-state hard disk is restarted and the physical page is scanned, the logical access address corresponding to the data cannot be judged from the information recorded in the physical page. Therefore, if the host system wants to Reading the logical access address may cause operational problems in the operating system of the host system due to failure to correctly reply data error information to the host system

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