An improved semiconductor memory device providing row/column redundancy.
The device includes a plurality of data latches arranged in a row-column
matrix connected to a set of bitlines/global bitlines interfacing to
read/write circuitry, at least two redundant row/column connected to a
redundant bitline/global bitline, a first device for providing a first
faulty row/column address in said matrix, a second device for generating
other faulty row/column addresses by incrementing or decrementing
predetermined numbers from the address provided by the first means, a
comparison circuitry receiving as its inputs the accessed row/column
address and the faulty row/column addresses, and a control block
connected to the said comparison circuitry that receives a control signal
such that it enables/disables the redundant and/or other memory cell
row/column depending upon signals received from said comparison circuitry
and control signal for normal operation of the memory device.