Nonvolatile memory device, memory system including nonvolatile memory device, and method of controlling nonvolatile memory device

A memory system, comprising:

• a nonvolatile memory device that includes memory cells connected to word lines and bit lines;
• and
• a controller configured to transmit a command and an address to the nonvolatile memory device,
• wherein, in response to the command, the nonvolatile memory device is configured to transmit, to the controller, first information representing a total capacitance including a first capacitance of a word line corresponding to the address among the word lines and a second capacitance of a peripheral circuit associated with the word line, and second information representing the second capacitance of the peripheral circuit, and
• wherein the controller is further configured to calculate the first capacitance of the word line based on the first information and the second information.

A control method of controlling a nonvolatile memory device which includes memory cells connected with a word line, the method comprising:

• charging a charging voltage to the word line and a peripheral circuit connected with the word line;
• leaking a fixed current from the peripheral circuit to detect a total capacitance of the word line and the peripheral circuit;
• charging the charging voltage to the peripheral circuit;
• leaking the fixed current from the peripheral circuit to detect a capacitance of the peripheral circuit;
• and
• subtracting the capacitance of the peripheral circuit from the total capacitance to calculate a capacitance of the word line.