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US 9,959,164 B2Granted
Semiconductor device and driving method thereof
AssigneeSK hynix Inc.
InventorMin Su Park
Life of this patent
Estimating the term…
Abstract
A driving method of a semiconductor device and semiconductor device may be provided. The semiconductor device may include a cell array including a plurality of data areas. The semiconductor device may include an ECC (Error correction Code) area configured to be assigned to only less than all of the data areas at any one time to store parity data corresponding to the data areas.
Claims17
A semiconductor device comprising:
- a cell array configured to divide a plurality of data areas, wherein the plurality of data areas is sequentially changed, a data area selected from the plurality of data areas to be subjected to an Error Correction Code (ECC) operation in correspondence to an ECC address based on a refresh operation corresponding to a refresh address;
- an ECC area in which the ECC operation is performed in correspondence to the data area selected from the plurality of data areas and parity data corresponding to the plurality of data areas is sequentially stored;
- a command/address generator configured to generate the ECC address for changing the data area and control a read/write operation of data of the cell array and the parity data based on the changing of the data area, and
- a control circuit configured to output control signals for controlling an operation of a command/address generator in correspondence to a refresh address, and active signal, and a refresh signal.
1 more element
A driving method of a semiconductor device, comprising the steps of:
- receiving a refresh signal in a refresh mode;
- reading data of a corresponding data area selected from a plurality of data areas when the refresh signal is activated;
- performing a parity operation based on an Error Correction Code (ECC) address, and writing a parity bit received from a parity line in an ECC area;
- performing an ECC operation for the corresponding data area when an active operation, a write operation and a read operation is performed and correcting an error;
- and
- reading data of the corresponding data area and the parity bit when a next refresh signal is applied, performing an ECC operation, and correcting an error.
3 more elements
Dependencies are inferred from the claim text.