Importance

Loading Importance Indicators...

Abstract

Provided is a semiconductor memory device in which it is possible to conduct a parallel test by comparison with an expected value after replacement with a redundant cell. The memory device includes a logic circuit for outputting an activated redundant hit signal when at least one determination circuit of determination circuits corresponding to respective ones of a plurality of redundant addresses is activated; a logic circuit for outputting an activated signal when all outputs of the circuits are inactive; and a selector for outputting a test-result mask signal when a redundant area is tested, and outputting the output of the logic circuit when a normal area is tested. The test result is forcibly passed when a memory array is tested and when a redundant address is accessed.

Loading the Abstract Image...

First Claim