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US 5,291,043 AGranted
Semiconductor integrated circuit device having gate array
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorTakahiko Arakawa
Life of this patent
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Abstract
A gate array semiconductor integrated circuit device allowing less clock skews is disclosed. The device includes a clock signal driver formed in the part under a power supply interconnection for input-output buffer in a power supply pin region or a ground pin region. The clock signal driver is formed in the power supply pin region and so on which, conventionally, was not utilized, so that the clock signal driver can be large enough to provide a clock signal to each basic cell column. Therefore, the input-output buffer region is not unduly occupied by the clock signal driver, and the connecting pads do not become useless.
Claims23
A semiconductor integrated circuit device comprising:
- a semiconductor substrate having a main surface, said main surface being divided into a central region in the central portion, a peripheral region along the outer periphery of said semiconductor substrate, and an intermediate region between said central region and said peripheral region;
- a basic cell array including a plurality of basic cells formed on said main surface in said central region,
- each said basic cell including a plurality of active elements and for forming a logic circuit;
- a plurality of bonding pads provided in said peripheral region and having a power supply pad and an input/output pad;
- and
- a clock signal driving means for providing a clock signal to said logic circuit, said clock driving means being formed in said intermediate region between said power supply pad and an outer edge of said central region, and positioned immediately adjacent said power supply pad.
3 more elements
A semiconductor integrated circuit device comprising:
- a semiconductor substrate having a main surface,
- said main surface being divided into a first region in the central portion, a second region along the outer periphery of said semiconductor substrate, and a third region between said first region and said second region, said third region circumscribing said first region and said second region circumscribing said third region;
- a basic cell array including a plurality of basic cells formed on said main surface in said first region,
- each said basic cell including a plurality of active elements;
- a plurality of wire bonding pads provided in said second region, and sued for connecting said semiconductor integrated
- a power bus formed in said third region and connected to a power supply wire bonding pad formed in said second region for supplying an externally potential to said basic cell array;
- a clock signal driving means formed in said third region immediately adjacent one power supply wire bonding pad, said clock signal driving means providing a clock signal externally applied over a clock signal input pad to each of said basic cells;
- and
- a plurality of input-output interface means formed in said third region for interfacing said basic cell array and the outside,
- each input/output interface means including output buffer means for supplying one of the outputs of said basic cell array to the outside over one of said plurality of wire bonding pads, and input buffer means for supplying a signal externally applied over a wire bonding pad to said basic cell array;
- wherein
- said powerbus is stacked on said clock signal driving means and the input-output interface means, provides predetermined voltage to said input-output interface means and includes an interconnection connected respectively to said power supply wire bonding pad in a portion of said third region which is above said clock signal driving means for providing an externally applied voltage over said power supply wire bonding pad to said output buffer means.
9 more elements
A semiconductor integrated circuit device comprising:
- a semiconductor substrate having a main surface,
- said main surface being divided into a central region in the central portion, a peripheral region along the outer periphery of said semiconductor substrate, and an intermediate region between said central region and said peripheral region;
- a basic cell array including a plurality of basic cells formed on said main surface in said central region,
- each said basic cell including a plurality of active elements;
- a plurality of bonding pads provided in said peripheral region, and used for connecting said semiconductor integrated circuit device with the outside, said plurality of bonding pads including input/output bonding pads for receiving and supplying signals and a power supply bonding pad means for receiving a power supply voltage, said power supply bonding pad means including a plurality of power supply bonding pads,
- a clock signal driving means formed in said intermediate region immediately adjacent one power supply bonding pad, said clock signal driving means providing an externally supplied clock signal to each of said basic cells;
- a plurality of input-output interface means formed in said intermediate region and connected to said input/output pads for interfacing said basic cell array and external signal lines,
- each input-output interface means including output buffer means for supplying outputs of said basic cell array over said input/output pads, and input buffer means for supplying an external signal from said input/output pads to said basic cell array;
- and
- interconnection means formed in said intermediate region, for providing said power supply voltage to said input-output interface means.
7 more elements
A semiconductor integrated circuit device comprising:
- a semiconductor substrate having a main surface,
- said main surface being divided into a central region in the central portion, a peripheral region along the outer periphery of said semiconductor substrate, and an intermediate region between said central region and said peripheral region;
- a basic cell array including a plurality of basic cells formed on said main surface in said central region,
- each said basic cell including a plurality of active elements;
- a plurality of bonding pads provided in said peripheral region, and used for connecting said semiconductor integrated circuit device with the outside, said bonding pads including input/output bonding pads for receiving and supplying signals and a power supply bonding pad for receiving a clock power supply voltage,
- a clock signal driving means formed in said intermediate region immediately adjacent said power supply bonding pad, said clock signal driving means providing an externally supplied clock signal to each of said basic cells;
- a plurality of input-output interface means formed in said intermediate region and connected to said input/output pads for interfacing said basic cell array and external signal lines,
- each interface means including output buffer means for supplying outputs of said basic cell array over said input/output pads, and
- input buffer means for supplying an external signal from said input/output pads to said basic cell array;
- and
- interconnection means formed in said intermediate region, for providing said power supply voltage to said input-output interface means.
8 more elements
Dependencies are inferred from the claim text.