Pattern generating apparatus

Details Pattern generating apparatus Pattern generating apparatus

1986-11-17

1988-10-04

Fleming, Michael R.

Excavating

G01R 3128

Patent

active

047759771

ABSTRACT:
A pattern generating apparatus for testing IC device includes an input/output mode memory, a pattern memory storing a driver pattern and an expected pattern, a driver pattern generator for outputting the driver pattern in response to the outputs of the pattern memory and the input/output mode memory, and an expected pattern generator for generating the expected pattern. The driver pattern is applied to the IC device whose output pattern is compared with the expected pattern in a comparison/decision circuit to decide whether the IC device is to be satisfactory or not. The pattern memory is of two-bit structure so that the driver pattern and the expected pattern can be varied in respect to the waveform in dependence on combinations of the two bits.

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