Apparatuses, systems, and methods related to determination of a match between data values stored by several arrays are described. A system using the data values may manage performance of functions, including automated functions critical for prevention of damage to a product, personnel safety, and/or reliable operation, based on whether the data values match. For instance, one apparatus described herein includes a plurality of arrays of memory cells formed on a single memory chip. The apparatus further includes comparator circuitry configured to compare data values stored by two arrays selected from the plurality to determine whether there is a match between the data values stored by the two arrays. The apparatus further includes an output component configured to output data values of one of the two arrays responsive to determination of the match between the data values stored by the two arrays.