Semiconductor integrated circuit device

Details Semiconductor integrated circuit device Semiconductor integrated circuit device

1990-08-09

1992-01-07

Prenty, Mark

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

357 2313, 357 68, 357 34, 361 91, H01L 2702, H01L 2906, H01L 2348, H01L 2972

Patent

active

050796127

ABSTRACT:
A semiconductor IC device including a main circuit block and at least one subcircuit block, each having a ground terminal, a supply voltage terminal and an input or output terminal. A first ground line is connected to the ground terminal of the main circuit block and arranged within a wiring domain of the main circuit block and adjacent to the subcircuit blocks. A second ground line is connected to the ground terminal of the subcircuit block and arranged within a wiring domain of the subcircuit block and adjacent to the main circuit block. Protective elements are connected between the first and second ground lines so as to form short circuits through at least one of the first and second ground lines. In the IC device thus configured, all of the input and output terminals resist overvoltage, in every case where any one of the ground terminals and the supply voltage terminals is determined as a reference potential terminal, without complicating the protective element wiring arrangement or increasing the chip area and the cost thereof.

REFERENCES:
patent: 4990802 (1991-02-01), Smooha
J. Martin, "A New Generation of Silicon Gate CMOS Arrays", Wescon Technical Paper, vol. 26, Sep. 1982, pp. 7/1, 1-10.
Patent Abstracts of Japan, vol. 7, No. 236, (E-205) [1381], Oct. 20, 1983, by Itou.

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