Digital semiconductor integrated circuit and digital control sys

Details Digital semiconductor integrated circuit and digital control sys Digital semiconductor integrated circuit and digital control sys

1981-02-05

1984-05-29

Gruber, Felix D.

Boots, shoes, and leggings

364140, 364900, G05B 1101, G06F 1500

Patent

active

044518919

ABSTRACT:
Herein disclosed is a digital semiconductor integrated circuit which is equipped with: a digital signal input circuit; an analog signal input circuit made receptive of an analog signal for feeing out a digital signal corresponding to said analog signal; and a common external terminal connected commonly with the input terminals of said digital signal input circuit and said analog signal input circuit. By the operation with the use of a suitable switch circuit, the aforementioned common external terminal can be used as either an analog signal input terminal or a digital signal input terminal. As a result, the number of the external output terminals required for the aforementioned semiconductor integrated circuit can be reduced.

REFERENCES:
patent: 4219875 (1980-08-01), Templeton
patent: 4276601 (1981-06-01), Tokuda et al.
patent: 4291656 (1981-09-01), Miyagi et al.
patent: 4308598 (1981-12-01), Mahmood

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