High-speed test cycle counter

Details High-speed test cycle counter High-speed test cycle counter

H - Electricity

03

K

H03K 21/00 (2006.01) G01R 31/3177 (2006.01) G01R 31/319 (2006.01) H03K 5/14 (2006.01) H03K 23/54 (2006.01)

Patent

CA 2318318

A high-speed wide range counter for Automated Test Equipment applications is divided into two separate, parallel counting blocks for counting over a wide range of count values including short and minimum counts while optimizing gate utilization. The first counting block based on pipeline logic circuitry is used to perform long counts and the second counting block based on wide parallel logic circuitry is used to perform short counts. The two blocks operate one at a time, exclusively of each other. Their outputs are combined to provide a final count value. The overall counter is optimized for high speeds as required in today's ATE applications since the combinatorial logic delay with polynomial counter decoding stages is avoided in the case of short count values. The counter also supports loading on a cycle-by-cycle basis.

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