Data structure of defective address information and defective address information encoding method for memory array

摘要

A defective address information encoding method for a memory array is provided. A page of the memory array is divided into plural segments. Each segment contains 2^m bits. The defective address information encoding method includes the following steps. Firstly, positions of N1 fail bits in a first segment of the plural segments are acquired. Then, an (N1+1)-bit first segment start code is generated. Then, N1 m-bit defective codes are generated. The N1 m-bit defective codes follow the first segment start code to indicate the positions of the N1 fail bits in the first segment, wherein N1 is zero or a positive integer, and m is a positive integer.