Variable rate output pulse generator

Details Variable rate output pulse generator Variable rate output pulse generator

1997-06-24

1998-11-10

Wambach, Margaret Rose

Electrical pulse counters, pulse dividers, or shift registers: c

Applications

Measuring or testing

377 54, 327114, 327299, G11C 1900

Patent

active

058355510

ABSTRACT:
The invention provides a high speed variable rate output pulse generating circuit for a semiconductor testing device. The circuit includes a shift register formed of 2n number of flip-flops which counts the lower bits of lower counter data selected by a selector, a ripple down counter formed of m number of flip-flops counts the upper bits of upper counter data selected by a NOR gate. A counting end judgment circuit for judging an end of counting the ripple down counter and the shift register produces a counting end signal. A first flip-flop latches the counting end signal to supply a counter load signal to the selector and the NOR gate to load subsequent data, and a second flip-flop generates a first output clock pulse.

REFERENCES:
patent: 5521848 (1996-05-01), Bayne et al.

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