US Patent 10593386 Semiconductor devices

A semiconductor device includes a synthesis signal generation circuit, a column control circuit, and a control signal generation circuit. The synthesis signal generation circuit generates a register synthesis signal in response to first and second read pulses sequentially generated during a read operation. The column control circuit generates any one of a first bank selection signal and a second bank selection signal for respectively selecting a first bank group and a second bank group included in a core circuit in response to the first and second read pulses. The control signal generation circuit generates a control signal for controlling an output operation of a mode register in response to the register synthesis signal.