Method for obtaining soft information of charge trapping type 3D NAND flash memory

The invention discloses a method for obtaining soft information of a charge trapping type 3D NAND flash memory. By reading the data of memory units adjacent to a target page, the soft information of the target page data is corrected according to the interference influence of the adjacent memory units obtained by offline training on the charges of the memory units, so that the accuracy of the softinformation is improved, and higher error correction performance is obtained. The method has important significance for improving the performance, the service life and the stability of the charge trapping type 3D NAND flash memory and reducing occupied resources and delay time. 本发明公开一种获得电荷俘获型3D NAND闪存软信息的方法，通过读取目标页面相邻的存储器单元的数据，根据离线训练获得的相邻存储器单元对其电荷保持干扰影响，对目标页面数据的软信息进行修正，提高软信息的准确性，获得更高的纠错性能。对于提高电荷俘获型3D NAND闪存的性能、寿命和稳定性，同时减少占用资源和延迟时间，有重要的意义。