Patent ID: 7521948

Claim:
A probe card for testing the integrated circuits in wafer form, the probe card comprising: a substrate; a plurality of conductive integrated circuit probes carried by and extending from the substrate; an integrated test circuit mounted on the substrate and coupled to the integrated circuit probes, the integrated test circuit being operable to apply test signals to the integrated circuits through the integrated circuit probes responsive to a test command, the integrated test circuit further being operable to receive response signals from the integrated circuits through the integrated circuit probes and to provide test results data derived from the response signal; the integrated test circuit comprising: a pattern generator operable to generate a pattern of test signals; a clock domain crossing buffer operable to transfer the pattern of test signals from a clock domain of the pattern generator to a clock domain of the integrated circuits; and a configuration switch operable to couple configuration data to the integrated test circuit, the integrated test circuit using the configuration data to control the manner in which the test signals are applied to the integrated circuit probes.