Patent ID: 6609077
Filing Date: 2003-08-19
Classification: G01R

Abstract:
Automatic test equipment for testing a semiconductor device, said automatic test equipment including:a computer workstation; pin electronics circuitry coupled between said semiconductor device and said computer workstation, said pin electronics circuitry including a plurality of channels, each channel including timing circuitry operative in response to desired programmed timing information, driver/comparator circuitry coupled to said timing circuitry for driving test waveforms at a first waveform period, and sampling data from said waveforms at a second waveform period, the first and second waveform periods having edges that periodically coincide to define a beat period, and a timing measurement unit coupled to said driver/comparator circuitry for measuring the relative timings of said sampled data, said plurality of channels cooperating to produce timing measurement data in parallel.