Data input circuit and semiconductor device utilizing data input circuit
AssigneeFujitsu Limited
InventorKazuyuki Kanazashi
Life of this patent
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Abstract
A data input circuit converts input serial data to n-bit parallel data, and outputs the n-bit parallel data by following an address signal. The data input circuit includes a data shifting unit including a plurality of columns, and sequentially shifting the input serial data through the plurality of columns; and a selection unit selecting a column among the plurality of columns as an input column by following the address signal, wherein the input serial data is inputted to the data shifting unit through the input column. Thus, the data input device can speed up its processing speed with a simplified circuit structure whose circuit size is reduced.
Claims10
A data input circuit converting input serial data to n-bit parallel data, and outputting the n-bit parallel data by following an address signal, said data input circuit comprising:
- a data shifting unit including a plurality of columns, and sequentially shifting the input serial data through the plurality of columns;
- and
- a selection unit selecting a column among the plurality of columns as an input column by following the address signal, wherein the input serial data is inputted to said data shifting unit through the input column.
A semiconductor device including a data input circuit converting input serial data to n-bit parallel data, and outputting the n-bit parallel data by following an address signal, said semiconductor device comprising:
- a data shifting unit including a plurality of columns, and sequentially shifting the input serial data through the plurality of columns;
- and
- a selection unit selecting a column among the plurality of columns as an input column by following the address signal, wherein the input serial data is inputted to said data shifting unit through the input column.
A method of converting input serial data to n-bit parallel data, and outputting the n-bit parallel data by following an address signal, said method comprising the steps of:
- selecting a column among a plurality of columns of a data shifting unit as an input column by following the address signal;
- inputting the input serial data to said data shifting unit through the input column;
- and
- shifting the input serial data sequentially through the plurality of columns.
Dependencies are inferred from the claim text.