MEMORY DIAGNOSIS APPARATUS

摘要

an in-word test means for testing coupling faults between the bits within a word on a word-by-word basis in a memory; an inter word test means for testing coupling faults between the words within a partial array for each partial array consisting of a plurality of words in the memory; and an inter block test means for testing coupling faults between the partial arrays in the memory. The memory diagnosis apparatus can perform a quick coupling fault diagnosis while maintaining the diagnostic accuracy at a certain level.