Patent ID: 9741456
Date: 2017-08-22
CPC Classifications: G11C

Claim:
1. An electronic device comprising a semiconductor memory unit that comprises: a first access line coupled to a first memory cell; a first spare line coupled to a first spare cell for replacing the first memory cell when the first memory cell is a failure memory cell; a first driving block coupled to one of the first access line and the first spare line, and suitable for driving said one of the first access line and the first spare line with a first voltage when the first memory cell is accessed; and a first repair coupling block disposed between the first access line and the first spare line and suitable for selectively coupling the first access line and the first spare line based on whether the first memory cell is a failure memory cell or not when the first memory cell is accessed, wherein the first voltage is transmitted to the first access line and the first spare line through the first repair coupling block when the first access line is coupled with the first spare line, and is transmitted to one of the first access line and the first spare line when the first access line is decoupled from the first spare line.