IC including counter circuit and one chip microcomputer thereof

Details IC including counter circuit and one chip microcomputer thereof IC including counter circuit and one chip microcomputer thereof

1992-12-29

1994-07-26

Wambach, Margaret Rose

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

Systems

Comparing counts

H03K 2100

Patent

active

053331630

ABSTRACT:
An IC according to the present invention contains a counter, which includes a plurality of incomplete coincidence detection circuits each associated with a different one of a corresponding number of flip-flops storing respective bit data of an aimed value, each incomplete coincidence detection circuit including a first logic element for receiving a Q or Q output of said associated flip-flop and a one-bit output from a bit location of the counter corresponding to the different flip-flop, and a second logic element for receiving an output of the first logic element and the other of the Q and Q output of the different flip-flop to provide a coincidence detection signal, the detection circuit being adapted to detect a coincidence of the aimed value with the count value when all of the incomplete coincidence detection circuits output the coincidence detection signals.

REFERENCES:
patent: 4612658 (1986-09-01), Eby
patent: 4835480 (1989-05-01), Skupen et al.
patent: 4989224 (1991-01-01), Narahara et al.

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