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Flash memory controller and control method thereof

A controller and flash memory technology, applied in the input/output process of instruments, data processing, electrical digital data processing, etc., can solve the problems of affecting the storage state, interfering with storage elements, reducing the reliability of flash memory, etc., to achieve the effect of reducing interference

Inactive Publication Date: 2019-08-20
SITRONIX TECH CORP
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, when a fixed constant (invalid data) is written into an unused storage area by charging with a charging circuit, the charging process of the charging circuit will interfere with the storage elements in the adjacent available storage area, and this interference may affect the available storage area The storage state of the storage element, which means that the valid data stored in the storage area may be wrong, which will reduce the reliability of the flash memory

Method used

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  • Flash memory controller and control method thereof
  • Flash memory controller and control method thereof
  • Flash memory controller and control method thereof

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Embodiment Construction

[0038] In order to have a further understanding and understanding of the structural features and the achieved effects of the present invention, the special embodiments and detailed descriptions are described as follows:

[0039] Certain terms are used throughout the specification and following claims to refer to particular elements. Those skilled in the technical field of the present invention should understand that hardware manufacturers may use different terms to refer to the same component. The scope of this specification and subsequent claims does not use the difference in names as a way to distinguish components, but uses the difference in function of components as a criterion for distinguishing. "Includes" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". Otherwise, the term "coupled" includes any direct and indirect means of electrical connection. Therefore, if it is described that a first...

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Abstract

The invention relates to a flash memory controller and a control method thereof. The flash memory controller comprises a disturbing circuit and a control circuit. The disturbing circuit disturbs at least one input data to generate at least one valid data. The control circuit receives at least one piece of invalid data and at least one piece of valid data generated by the disturbing circuit, and the at least one piece of invalid data is not a fixed constant, and the control circuit writes the at least one piece of valid data into at least one valid storage area of the flash memory and writes the at least one piece of invalid data into at least one invalid storage area of the flash memory. By writing the invalid data which is not a fixed constant into the invalid storage area of the flash memory, the interference of the invalid storage area to the valid storage area can be reduced, so that the reliability and available storage space of the flash memory can be improved.

Description

technical field [0001] The invention relates to a flash memory, in particular to a controller and a control method for controlling the flash memory. Background technique [0002] Due to the vigorous development of electronic products, consumers' demand for storage media has also increased. Since rewritable non-volatile memory (rewritable non-volatile memory) has the characteristics of rewritable data, fast read and write data speed, data non-volatility, power saving and small size, rewritable non-volatile memory Memory is most suitable as a storage medium for electronic products, especially flash memory. [0003] Generally speaking, some storage areas of some flash memory have been damaged when they leave the factory. Although data can still be written to these damaged storage areas, the data read from these damaged storage areas is different from the original data, which means These damaged storage areas cannot store data normally. Therefore, when writing data into the f...

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Application Information

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IPC IPC(8): G06F3/06
CPCG06F3/0614G06F3/0608G06F3/0638G06F3/0658G06F3/0679
Inventor 庄富升谢明廷叶政忠
Owner SITRONIX TECH CORP
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