Patent ID: 6530046
Filing Date: 2003-03-04
Classification: G11C,H01L

Abstract:
A circuit for testing a plurality of function modules having same function to be incorporated into a device, said circuit comprising:a test module selection circuit for receiving a test input vector via a test input terminal, and selecting, out of a plurality of said function modules, one or more function modules to be supplied with the test input vector according to an input selection signal; a synchronous input circuit for receiving said test input vector from said test module selection circuit, and supplying said test input vector synchronously to the function modules selected by said test module selection circuit; an output module selection circuit for receiving test results outputted as a sequel of tests carried out simultaneously in parallel in said function modules supplied with said test input vector by said synchronous input circuit, and selecting one or more test results out of said outputted test results according to an output selection signal; and a comparison circuit for receiving one or more test results of tests carried out in the function modules selected by said test module selection circuit, comparing selected test result selected by said output module selection circuit with other test results, and outputting at least one result of a comparison via a comparison result output terminal.