METHODS AND APPARATUS FOR ANALYZING AND REPAIRING MEMORY

摘要

Methods and apparatus for analyzing and repairing memory are presented. The method includes the step (302,304,306) of determining if failed memory cells detected in at least a portion of memory must be repaired using only one of a number of types of memory spares or may be repaired using any of the types of memory spares. Failed memory cells that must be repaired using only one of the number of types of memory spares are repeatedly repaired (308) skipping any failed memory cells that may be repaired using any of the number of types of memory spares, until either no new errors that must be repaired are repaired and no failed memory cells are skipped or memory is determined to not be repairable.