A kind of verification method and device of NAND Flash memory chip
A technology of memory chips and verification methods, applied in the field of verification of NAND Flash memory chips, can solve problems such as only one-bit error correction, and achieve the effect of ensuring integrity and accuracy and reducing the risk of crashes
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Embodiment 1
[0035] refer to figure 1 , figure 1 It is a flow chart of a verification method for a NAND Flash memory chip provided in Embodiment 1 of the present invention, and the method includes the following steps:
[0036] Step 101, the data in the data area of each page of the NAND Flash memory chip is carried out to all the data on the same row to obtain the exclusive OR value, and all the data on the same column is carried out to the exclusive OR operation to obtain the exclusive OR value, and the row and column The XOR value is written into the extension area of the NAND Flash memory chip;
[0037] Specifically, refer to figure 2 , the NAND Flash memory chip has 2K Bytes per page, a total of 16K bits, which are arranged into a 128*128 matrix, and XOR operations are performed on all points in the same row to obtain the final XOR value, so record the XOR values of all rows The value needs 128bits; the column is processed in the same way, and the final row and column need 16...
Embodiment 2
[0097] refer to Figure 5 , Figure 5 It is a structural diagram of a verification device for a NAND Flash memory chip provided in Embodiment 1 of the present invention, and the device includes the following units:
[0098] The writing unit 501 is used to perform an XOR operation on all the data on the same row to obtain an XOR value for the data in the data area of each page of the NAND Flash memory chip, and perform an XOR operation on all the data on the same column to obtain an XOR value , writing the XOR values of rows and columns into the extension area of the NAND Flash memory chip;
[0099] Specifically, refer to figure 2 , the NAND Flash memory chip has 2K Bytes per page, a total of 16K bits, which are arranged into a 128*128 matrix, and XOR operations are performed on all points in the same row to obtain the final XOR value, so record the XOR values of all rows The value needs 128bits; the column is processed in the same way, and the final row and column ...
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