×

Semiconductor memory device with redundancy circuit

DC
  • US 5,894,441 A
  • Filed: 03/31/1998
  • Issued: 04/13/1999
  • Est. Priority Date: 03/31/1997
  • Status: Expired due to Term
First Claim
Patent Images

1. A semiconductor memory device comprising, a plurality of column selection lines, at least one redundant column selection line, a column decoder for activating one of said plurality of column selection lines in response to a column address, a first circuit generating a detection signal when the column address of a defective column selection line is supplied, and a second circuit activating said redundant column selection line in response to said detection signal and at least a part of said row address.

View all claims
  • 9 Assignments
Timeline View
Assignment View
    ×
    ×