Patent ID: 11887685
Assignee: CHANGXIN MEMORY TECHNOLOGIES, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 13:
14. A Fail Bit (FB) repair device, comprising:
a memory for storing instructions; and
a processor configured to execute the instructions to perform operations of:
determining a bank to be repaired of a chip to be repaired, the bank to be repaired comprising multiple target repair regions;
performing first repair processing on a first FB in each target repair region by using a redundant circuit;
after first repair processing is performed, executing a second FB position determination step to determine a bit position of a second FB in each target repair region, and perform second repair processing on the second FB according to the bit position of the second FB; and
determining unrepaired FBs in each target repair region, and recursively execute the second FB position determination step to obtain a test repair position of each unrepaired FB to perform third repair processing on the unrepaired FB according to the test repair position;
wherein the processor is further configured to execute the instructions to:
after determining the bank to be repaired of the chip to be repaired, determine a division column of the bank to be repaired, a width of the division column being determined according to a number of row-direction equivalent bits in a Data Queue (DQ) after compression processing; and
perform column division processing on the bank to be repaired according to the division column to form the multiple target repair regions.