a random access memory comprises a plurality of data pads and an array of memory cells comprising a first portion of memory cells and a second portion of memory cells . the random access memory comprises a first line configured to receive first data signals between the first portion of memory cells and the data pads and a second line configured to receive second data signals between the second portion of memory cells and the data pads . the first portion of memory cells is configured to be made inaccessible to eliminate the first data signals and a first number of the data pads and the second portion of memory cells is configured to be made inaccessible to eliminate the second data signals and a second number of the data pads .