Integrated circuit having alternate rows of logic cells and I/O

Details Integrated circuit having alternate rows of logic cells and I/O Integrated circuit having alternate rows of logic cells and I/O

1992-07-21

1994-08-23

Hudspeth, David R.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

3074651, 3073031, 257732, H03K 19177

Patent

active

053410491

ABSTRACT:
A semiconductor IC device has an input/output circuit and an internal logic circuit connected with the input/output circuit formed in a main surface of a semiconductor substrate of a generally rectangular shape. The input/output circuit is divided into at least two input/output circuit blocks in such a manner that edges of the logic circuit blocks defined by the division on the main surface of the substrate extend in a direction substantially parallel with a pair of opposite sides of the substrate. The internal logic circuit is divided into at least three logic circuit blocks in such a manner that edges of the logic circuit blocks defined by the division on the main surface of the substrate extend in the above-mentioned direction. Each of the input/output circuit blocks is sandwiched by and electrically connected with adjacently arranged two of the logic circuit blocks.

REFERENCES:
patent: 4780846 (1988-10-01), Tanabe et al.
patent: 4864381 (1989-09-01), Seefeldt et al.
patent: 5239215 (1993-08-01), Yamaguchi

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