摘要:
A semiconductor integrated circuit device includes: a master chip(203) including a basic cell region(201) having a plurality of basic cell arrays(206) arranged thereon, and an input/output cell region(202) having a plurality of input/output cells(207) arranged along the periphery of the basic cell region; a first wiring layer formed on the basic cell region and the input/output cell region via a first insulation layer having contact holes at predetermined positions, the first wiring layer including fixed wirings(LA,508); and a second wiring layer formed on the first wiring layer via a second insulation layer having through holes at predetermined positions, the second wiring layer including programmed wirings(LB,507). Only the wiring pattern of the second wiring layer is suitably changed in accordance with conditions of circuits applied to the input/output cell region and the basic cell region in regions corresponding to the input/output cell region and the basic cell region, thereby greatly reducing a turnaround time of the device.
摘要:
A layout technology of a masterslice semiconductor device is disclosed, which reduces the unused redundant transistors. In the basic cells of the masterslice semiconductor device, each of the transistors is formed to be electrically independent from others; i.e., each transistor has an individual gate electrode and occupies an individual region for the source and drain. The terminals formed in parallel to the conduction channel of a relevant transistor permits to interconnect substantially any electrodes in a basic cell array by a straight wiring line. Such straight interconnection reduces the effective number of wiring channels for constituting a unit cell, and facilitates to construct a larger scale unit cell in a basic cell array.
摘要:
A layout technology of a masterslice semiconductor device is disclosed, which reduces the unused redundant transistors. In the basic cells of the masterslice semiconductor device, each of the transistors is formed to be electrically independent from others; i.e., each transistor has an individual gate electrode and occupies an individual region for the source and drain. The terminals formed in parallel to the conduction channel of a relevant transistor permits to interconnect substantially any electrodes in a basic cell array by a straight wiring line. Such straight interconnection reduces the effective number of wiring channels for constituting a unit cell, and facilitates to construct a larger scale unit cell in a basic cell array.
摘要:
Gate array LSI's are produced with the aid of a standard layout pattern defining a basic cell array region (2), on which internal cell arrays are arranged, and a peripheral circuit region (3), arranged on the periphery of the basic cell array region. The peripheral circuit region comprises input/output cell regions (7), for constructing an input buffer circuit and a part of an output circuit, and a general purpose cell array region (4) which can be used for constructing remaining parts of the output buffer circuit. Where the general purpose cell array region is not used in the construction of such a buffer circuit it can be used for constructing various other desired circuits. Thus greater design flexibility is made available.
摘要:
A gate-array chip comprises a plurality of basic-cell arrays (40) arranged parallel to one another on a semiconductor bulk (60), and a plurality of impurity regions (50) formed on the semiconductor bulk and in regions between the basic-cell arrays. The impurity regions and part of the basic-cell arrays are adapted to form input/output circuits (10) whereby the gate-array chip can be divided into several chips each having a desired size and a desired number of gates.
摘要:
A semiconductor integrated circuit device includes: a master chip(203) including a basic cell region(201) having a plurality of basic cell arrays(206) arranged thereon, and an input/output cell region(202) having a plurality of input/output cells(207) arranged along the periphery of the basic cell region; a first wiring layer formed on the basic cell region and the input/output cell region via a first insulation layer having contact holes at predetermined positions, the first wiring layer including fixed wirings(LA,508); and a second wiring layer formed on the first wiring layer via a second insulation layer having through holes at predetermined positions, the second wiring layer including programmed wirings(LB,507). Only the wiring pattern of the second wiring layer is suitably changed in accordance with conditions of circuits applied to the input/output cell region and the basic cell region in regions corresponding to the input/output cell region and the basic cell region, thereby greatly reducing a turnaround time of the device.