Method for nand flash memory to complete convolution operation of multi-bit data

A method for a NAND flash memory to complete convolution operation of multi-bit data, comprising the following steps:

• S0:
• providing a NAND flash memory, wherein the NAND flash memory comprises a plurality of memory blocks and a plurality of page buffers, each memory block comprises a plurality of synaptic strings, a plurality of bit lines and a plurality of word lines, each synaptic string comprises a plurality of memory cells connected in series, the synaptic strings are connected to the bit lines in one-to-one correspondence, the word line is connected to all the synaptic strings, the page buffer is connected to all the memory blocks, and one of the bit lines is connected to only one of the page buffers;
• S1:
• weight data comprising a plurality of pieces of sub-weight data, wherein the sub-weight data are m-bit data, m is an integer greater than or equal to 2, feature data comprising a plurality of pieces of sub-feature data, wherein one piece of sub-weight data corresponds to at least one piece of sub-weight data, the sub-feature data are in one-to-one correspondence with the memory blocks, the plurality of memory cells connected by the same word line is divided into a plurality of groups of memory cells, the sub-weight data are written into the plurality of groups of memory cells according to a corresponding relationship between the sub-weight data and the sub-feature data, wherein one group of memory cells is configured to only store one piece of sub-weight data, and one memory cell in one group of memory cells is configured to only store 1-bit data of the sub-weight data;
• S2:
• applying a target voltage to the plurality of groups of memory cells via the plurality of word lines;
• S3:
• sensing, by the plurality of corresponding page buffers, currents of the memory blocks to obtain a plurality of pieces of sub-data;
• and
• S4:
• processing the plurality of pieces of sub-data to obtain a convolution result.