Memory storage device, memory controller and data writing method

A memory controller, data writing technology, applied in the direction of input/output to the record carrier, generation of response errors, error detection of redundant codes, etc. problem, to achieve the effect of increasing stability
CN102890645AActive Publication Date: 2013-01-23PHISON ELECTRONICS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
PHISON ELECTRONICS
Publication Date
2013-01-23

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Abstract

The invention discloses a memory storage device, a memory controller and a data writing method. The memory storage device is coupled to a host computer system; and the memory storage device comprises an error check and correction circuit and a reproducible nonvolatile memory chip. The method comprises a step of judging whether written data belong to a specific type when the written data are to be written into the reproducible nonvolatile memory chip, and also comprises the steps of generating at least one first type error check and correction code according with the first length by the error check and correction circuit according to the written data if the written data belong to the specific type, and generating at least one second type error check and correction code according with the second length by the error check and correction circuit according to the written data if the written data do not belong to the specific type, wherein the first length is larger than the second length.
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Description

technical field

[0001] The invention relates to a data writing method, in particular to a data writing method for strengthening the protection of specific data, 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. 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 storage device converts the logical access address to be accessed by the host system into the corresponding logical page, and then accesses the physical page corresponding to the logical page.

[0003] Since the data sto...

Claims

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