Method for operating a memory device and memory device thereof
AssigneePUFsecurity Corporation
InventorsChi-Yi Shao, Chia-Cho Wu
Life of this patent
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Abstract
The present application discloses a method for operating a memory device. The memory device includes a plurality of rows of repair one-time programmable (OTP) cells and a plurality of rows of main OTP cells. The method includes performing a testing procedure to determine validities of the plurality of rows of repair OTP cells and store repair information to a first part of rows of repair OTP cells that are determined to be valid, and performing a repairing procedure to determine validities of the plurality of rows of repair OTP cells and repair at least one row of main OTP cells that is determined to be invalid in the plurality of rows of main OTP by using a second part of the rows of repair OTP cells that are determined to be valid.
Claims20
A method for operating a memory device, the memory device comprising a memory array, the memory array comprising a plurality of rows of repair one-time programmable (OTP) cells and a plurality of rows of main OTP cells, and the method comprising:
- performing a testing procedure to determine validities of the plurality of rows of repair OTP cells and store repair information to a first part of rows of repair OTP cells that are determined to be valid;
- and
- performing a repairing procedure to determine validities of the plurality of rows of main OTP cells and repair at least one row of main OTP cells that is determined to be invalid in the plurality of rows of main OTP by using a second part of the rows of repair OTP cells that are determined to be valid.
A memory device, comprising:
- a memory array, comprising:
- a plurality of rows of main OTP cells, configured to store data;
- a plurality of rows of repair one-time programmable (OTP) cells;
- and
- a controller, configured to:
- perform a testing procedure to determine validities of the plurality of rows of repair OTP cells and store repair information to a first part of rows of repair OTP cells that are determined to be valid;
- and
- perform a repairing procedure to determine validities of the plurality of rows of repair OTP cells and repair at least one row of main OTP cells that is determined to be invalid in the plurality of rows of main OTP by using a second part of the rows of repair OTP cells that are determined to be valid.
Dependencies are inferred from the claim text.