US 6,208,566 B1Granted

Semiconductor integrated circuit

AssigneeOki Electric Industry Co., Ltd.

InventorsOsamu Kuroki, Masakuni Kawagoe

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Abstract

A first data store circuit is coupled to first and second voltage nodes of first and second voltage levels, respectively, and a control circuit outputs a transfer signal and a switching signal. A data transfer circuit is coupled between the first data store circuit and a second data store circuit and selectively transfers the data in the first data store circuit to the second data store circuit in response to the transfer signal. A first conductive line supplies the first voltage level to the second data store circuit and a second conductive line supplies the second voltage level to the second data store circuit. A first switch circuit is coupled between the second voltage node and the second conductive line and selectively connects the second voltage node to the second conductive line in response to the switching signal. Also a resistive element is coupled between the second conductive line and the first voltage node.

Claims21

Dependent claims

A semiconductor integrated circuit comprising:

a first voltage node of a first voltage level;
a second voltage node of a second voltage level;
a first data store circuit, coupled to said first and second voltage nodes, which stores a data;
a second data store circuit;
a control circuit which outputs a transfer signal and a switching signal;
a data transfer circuit, coupled between said first data store circuit and said second data store circuit, which selectively transfers the data in said first data store circuit to said second data store circuit in response to the transfer signal;
a first conductive line which supplies said first voltage level to said second data store circuit;
a second conductive line which supplies said second voltage level to said second data store circuit;
a first switch circuit, coupled between said second voltage node and said second conductive line, which selectively connects said second voltage node to said second conductive line in response to the switching signal;
and
a first resistive element coupled between said second conductive line and said first voltage node, so that a voltage level of said second conductive line gradually changes from said second voltage level toward said first voltage level after said second conductive line is disconnected from said second voltage node by said first switch circuit.

8 more elements

A semiconductor integrated circuit comprising:

a first voltage node of a first voltage level;
a second voltage node of a second voltage level;
a first conductive line;
a second conductive line;
a first data store circuit, coupled to said first and second voltage nodes, which stores a data;
a second data store circuit coupled to said first and second conductive lines;
a control circuit which outputs a transfer signal, a switching signal and a equalizing signal;
a data transfer circuit, coupled between said first data store circuit and said second data store circuit, which selectively transfers the data in said first data store circuit to said second data store circuit in response to the transfer signal;
a first switch circuit, coupled between said second voltage node and said second conductive line, which selectively connects said second voltage node to said second conductive line in response to the switching signal;
a second switch circuit, coupled between said first voltage node and said first conductive line, which selectively connects said first voltage node to said first conductive line in response to the switching signal;
and
a third switch circuit, coupled between said first conductive line and said second conductive line, which selectively connects said first conductive line to said second conductive line in response to the equalizing signal.

9 more elements

A semiconductor integrated circuit comprising:

a first voltage node of a first voltage level;
a second voltage node of a second voltage level;
a third voltage node of a third voltage level, the third voltage level being between the first voltage level and the second voltage level;
a first conductive line;
a second conductive line;
a first data store circuit, coupled to said first and second voltage nodes, which stores a data;
a second data store circuit coupled to said first and second conductive lines;
a control circuit which outputs a transfer signal, first and second switching signals;
a data transfer circuit, coupled between said first data store circuit and said second data store circuit, which selectively transfers the data in said first data store circuit to said second data store circuit in response to the transfer signal;
a first switch circuit, coupled between said second voltage node and said second conductive line, which selectively connects said second voltage node to said second conductive line in response to the first switching signal;
a second switch circuit, coupled between said first voltage node and said first conductive line, which selectively connects said first voltage node said first conductive line in response to the first switching signal;
and
a third switch circuit, coupled between said third voltage node and said second conductive line, which selectively connects said third voltage node to said second conductive line in response to the second switching signal.

10 more elements

Dependencies are inferred from the claim text.