Quality detection method and device for storage product, storage medium and equipment
A quality inspection and product technology, applied in the field of flash memory, can solve the problem of lack of quality and reliability inspection of storage products, and achieve the effect of simple and easy inspection method, improved yield rate and high accuracy.
Pending Publication Date: 2020-02-11
BIWIN STORAGE TECH CO LTD
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Problems solved by technology
[0004] The main purpose of the present invention is to provide a quality detection method for storage products, aiming to solve the technical problem of lack of quality and reliability detection of existing storage products
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[0034] It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
[0035] In order to solve the above technical problems, the present invention provides a quality inspection equipment for storage products, see figure 1 with figure 2 The quality inspection equipment includes a data processing terminal 10 and a display 20 connected to the data processing terminal 10. In this embodiment, the data processing terminal 10 may be a computer, and the display 20 may be a liquid crystal display. The data processing terminal 10 and the display 20 The connection mode of is not limited to the split wired connection shown in the figure. The data processing terminal 10 and the display 20 can be integrated, for example, the display 20 is embedded in the housing of the data processing terminal 10. Specifically, the data processing terminal 10 includes a system bus 11 and a data interface (such as ...
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The invention discloses a quality detection method for a storage product, and the method comprises the steps: carrying out power-on of the storage product, and enabling each flash unit of the storageproduct to be fully written with test data; conducting reading operation on each flash unit every other preset time so as to obtain RBER data of all blocks in each flash unit; and when the cycle indexof the read operation performed on the flash unit reaches a preset value, judging whether the storage product is a good product or not according to the counted RBER data of all blocks. The RBER dataof each block is obtained by performing cyclic reading operation on the flash unit, and the quality of the storage product is evaluated according to the collected RBER data, so that whether the storage product exceeding the ECC error correction range exists or not is determined. The detection method is simple and easy to implement and high in accuracy, and the ex-factory yield of the storage products can be increased.
Description
Technical field [0001] The present invention relates to the technical field of flash memory, and in particular to a quality detection method, device, storage medium and equipment of storage products. Background technique [0002] At present, the ECC error correction mechanism in embedded storage products is an important technical means to ensure the accuracy of data reading and writing. After the controller control data passes the ENCODE of the ECC module, it is written into NandFlash. The writing process will generate a part of RBER (original bit error rate). When the data is read, the DECODE error correction of the ECC module is used. If no UECC occurs (Error correction failed), then the data is normal. [0003] The ECC error correction mechanism requires live operation and is carried out in the process of reading data. If a piece of NandFlash has leakage, long-term storage (such as storage in the warehouse before shipment) will cause the RBER to gradually increase, and finally...
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Login to View More IPC IPC(8): G06F11/22G06F11/10
CPCG06F11/2273G06F11/2221G06F11/1012G06F11/2284
Inventor 叶欣孙成思孙日欣李振华
Owner BIWIN STORAGE TECH CO LTD