Apparatus and method of transmitting and receiving data, and semiconductor package including the same

A method of transmitting and receiving data, the method comprising:

• precharging first through N-th data transmission lines and a reference node to a precharge level during a precharge interval occurring before first through N-th data signals are transmitted, the first through N-th data transmission lines configured to transmit the first through N-th data signals, the reference node configured to receive a reference signal, N being a natural number;
• maintaining each of the first through N-th data transmission lines to the precharge level or discharging each of the first through N-th data TSVs at a first discharge speed according to a logic level transmitted during a developing interval occurring transmission of the first through N-th data signals begins;
• discharging the reference node at a second discharge speed during the developing interval, the second discharge speed being slower than the first discharge speed;
• and
• sensing logic levels of each bit of N-bit data based on level differences between the first through N-th data transmission lines and the reference node during a sensing interval occurring after the transmission of the first through N-th data signals is completed.

A semiconductor package comprising:

• a substrate;
• a first semiconductor chip on the substrate, the first semiconductor chip including a data transmitter, the data transmitter including first through N-th data drivers and a strobe driver, the first through N-th data drivers configured to provide first through N-th data signals, respectively, where N is a natural number, and the strobe driver configured to provide a strobe signal;
• a second semiconductor chip on the substrate, the second semiconductor chip including a data receiver, the data receiver including first through N-th sense amplifiers and a strobe buffer, the strobe buffer configured to generate a control signal based on the strobe signal, and the first through N-th sense amplifiers configured to sense N-bit data based on the control signal, a reference signal and the first through N-th data signals;
• a bus between the first semiconductor chip and the second semiconductor chip, the bus including a strobe transmission line and first through N-th data transmission lines, the strobe transmission line connecting the strobe driver with the strobe buffer, and the first through N-th data transmission lines connecting the first through N-th data drivers with the first through N-th sense amplifiers, respectively;
• and
• a reference signal supplier configured to adjust the reference signal such that a discharge speed of the reference signal is slower than a discharge speed of each of the first through N-th data signals during data transmission.