Electrical pulse counters – pulse dividers – or shift registers: c – Starting – stopping – presetting or resetting the counter – Counter chains with a radix or base other than the number...
Patent
1991-09-30
1993-10-12
Heyman, John S.
Electrical pulse counters, pulse dividers, or shift registers: c
Starting, stopping, presetting or resetting the counter
Counter chains with a radix or base other than the number...
377111, 377121, 307448, H03K 2102, H03K 2138
Patent
active
052532798
ABSTRACT:
A semiconductor integrated circuit includes an input terminal provided for each of input terminals. The input circuit outputs either one of "HIGH" or "LOW" as a frequency dividing ratio setting signal when the corresponding input terminal is "HIGH" or "LOW" in level but outputs another one of "HIGH" and "LOW" as a frequency dividing ratio setting signal when the corresponding input terminal is in an open state. Thus, the frequency dividing ratio of the programmable divider is determined, by fixing the level of only required ones of the input terminals into "HIGH" or "LOW" through, for example, wire bonding in the package while leaving all the others in open state.
REFERENCES:
patent: 3976946 (1976-08-01), Schroder
patent: 4331926 (1982-05-01), Minakuchi
patent: 4525851 (1985-06-01), Smith et al.
patent: 4855622 (1989-08-01), Johnson
patent: 4902909 (1990-02-01), Chantepie
patent: 4947411 (1990-08-01), Shiraishi et al.
patent: 5084907 (1992-01-01), Maemura
Heyman John S.
Mitsubishi Denki & Kabushiki Kaisha
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