TESTING DEVICE AND TESTING METHOD FOR TESTING OBJECT MEMORY STORING DATA RAW WITH ERROR CORRECTING CODES ADDED

摘要

A test apparatus for error correction code is tested under test memory for storing additional data strings, each data that is contained in the column data read out from the memory-under-test, and a logic comparator for comparing the expected pre-generated value, the expected If the value and the data error counting section for counting the number of data do not match, the data error counting section counts the value in advance exceeds the predetermined upper limit number or more, the test apparatus comprising a defect detection section for detecting the failure of the MUT It provides. ; Error correction code, data error correction, the error count data, a memory testing apparatus, the memory test method.