Semiconductor device

A semiconductor device comprising:

• a first rank including a plurality of first semiconductor chips coupled to a first chip selection signal transmission line, a first command transmission line, a first address transmission line, and a controller, each of the plurality of first semiconductor chips being coupled to a corresponding one of a plurality of first data mask transmission lines,
• wherein the controller is configured to allow a data mask signal to be applied to the first semiconductor chip,
• wherein the first rank includes:
• a first data region including a first set of the first semiconductor chips;
• and
• a metadata region including a second set of the first semiconductor chips,
• wherein the metadata region stores metadata including information about a lifetime of the semiconductor device,
• wherein each of the first semiconductor chips includes:
• a control information storage circuit storing corresponding data mask information;
• and
• a data masking circuit configured to generate a result of a data masking operation based on a corresponding data mask signal,
• wherein the data masking circuit is further configured to output the result of the data masking operation when the corresponding data mask information has an activation value, and output a command signal when the corresponding data mask information has a deactivation value,
• wherein the data mask information stored in each of the first semiconductor chips has a same value, and
• wherein the data masking operation is an operation of deciding whether to perform an operation corresponding to the command signal in response to the corresponding data mask signal.