Patent ID: 8803597

Claim:
A semiconductor integrated circuit comprising a plurality of semiconductor chips stacked therein, wherein each semiconductor chip comprises: a compatible mode selection unit configured to transfer a chip allocation signal assigned to the semiconductor chip, among a plurality of chip allocation signals inputted through a plurality of pads, based on stack package information; and an internal circuit configured to perform a given operation in response to the chip allocation signal selected by the compatible mode selection unit, wherein the compatible mode selection unit comprises: a control signal generation unit configured to generate a control signal corresponding to the stack package information; and a selection unit configured to directly output the assigned chip allocation signal inputted through a pad arranged at one end, among the plurality of pads, to the internal circuit, circularly shift the other chip allocation signals among the plurality of chip allocation signals based on the control signal, and transmit the other chip allocation signals, which are circularly shifted, to corresponding pads included in another semiconductor chip stacked or to be stacked adjacently among the plurality of semiconductor chips.