Nonvolatile memory including duty correction circuit and storage device including the nonvolatile memory

A nonvolatile memory comprising:

• a clock pin configured to receive an external clock signal during a training period;
• an input/output pin configured to transmit and receive a data signal or a data strobe signal;
• a buffer chip connected to the clock pin and the input/output pin and configured to buffer the external clock signal to generate a buffered external clock signal;
• a first memory chip configured to perform a first duty correction operation on a first internal clock signal based on the buffered external clock signal;
• and
• a second memory chip configured to perform a second duty correction operation on a second internal clock signal based on the buffered external clock signal, the first and second duty correction operations being performed in parallel during the training period,
• wherein the buffer chip includes,
• a first duty correction circuit (DCC) configured to perform a third duty correction operation on an output signal received from the first memory chip or the second memory chip, and
• a first output buffer connected between an output terminal of the first DCC and the input/output pin.

A nonvolatile memory comprising:

• a clock pin configured to receive an external clock signal during a duty correction circuit training period;
• an input/output pin configured to transmit and receive a data signal or a data strobe signal;
• and
• a memory chip connected to the clock pin and the input/output pin, wherein the memory chip includes,
• an internal circuit configured to receive the external clock signal through the clock pin and generate an internal clock signal from the received external clock signal,
• a duty correction circuit (DCC) configured to perform a duty correction operation on the internal clock signal, and
• an output buffer connected between an output terminal of the DCC and the input/output pin,
• wherein, during the training period, the input/output pin is configured to float.