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Method and system for identification of chip parameters

An identification method and chip technology, applied in information storage, static memory, instruments, etc., can solve problems such as unfavorable product production, small customers and R&D personnel disclosing nandflash chips, etc.

Inactive Publication Date: 2015-06-03
WUXI ZGMICRO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, for the purpose of protection, many nandflash manufacturers only disclose the authorized datasheet technical documents to large customers, and do not disclose the datasheet technical documents of nandflash chips to small customers and R&D personnel.
In addition, since nandflash chips continue to introduce new products, in order to support the continuous introduction of new products, manufacturers must constantly update the nandflash parameter list (software or hardware), which is not conducive to product production

Method used

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  • Method and system for identification of chip parameters
  • Method and system for identification of chip parameters
  • Method and system for identification of chip parameters

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Embodiment Construction

[0027] Embodiments of the present invention provide a method and system for identifying chip parameters, which are used to identify physical parameters of nandflash chips.

[0028] The nandflash chip identification scheme provided by the embodiments of the present invention can identify any unknown physical parameter information of nandflash chips, so that developers can get rid of the dependence on datasheet technical documents to a certain extent; by saving the identified physical parameter information in nandflash On the chip, the manufacturer does not need to constantly update the parameter table of the nandflash chip.

[0029] The embodiment of the present invention gradually identifies multiple physical parameters of the unknown nandflash chip through traversal attempts, including: the number of blocks (blocks) of the chip, the number of pages (pages) included in each block, and the effective data area of ​​each page (data area), the size of the spare area per page, the ...

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Abstract

The invention discloses a method and a system for identification of chip parameters, and the method and system are used for identifying physical parameters of a NAND flash chip. The invention provides an identification method which comprises the following steps of: formatting the block where the first set of specific pages of the NAND flash memory chip are in; writing specific data into a second set of specific pages, and formatting a block where the number zero page is in; reading data from the second set of specific pages; and determining the numbers of pages contained in every block of the NAND flash chip by comparing the read data with the specific data, wherein the first set of specific pages and the second set of specific pages are determined in advance according to the numbers of pages contained in every block of the NAND flash chip.

Description

technical field [0001] The invention relates to the field of chip technology, in particular to a method and system for identifying chip parameters. Background technique [0002] In the prior art, if you want to use a certain flash memory (nandflash) chip, you must obtain the technical document of the data sheet (datasheet) of the chip, and organize a parameter list according to the description of the technical document, and the software or hardware is passed through the parameter list. various parameters to work. [0003] At present, for the purpose of protection, many nandflash manufacturers only disclose the authorized datasheet technical documents to large customers, and do not disclose the datasheet technical documents of nandflash chips to small customers and R&D personnel. In addition, since nandflash chips continue to introduce new products, in order to support the constantly launched new products, manufacturers must constantly update the nandflash parameter list (so...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11C16/20
Inventor 凌明
Owner WUXI ZGMICRO ELECTRONICS CO LTD