Memory system and method of controlling thereof

A method of controlling a memory system connectable to a host, the memory system including a nonvolatile memory, the memory system being capable of executing a command received from the host and addressed to the memory, the memory system including:

• a signal line transferrable a signal sent from the host;
• and a resistance element disposed between and electrically connected to the signal line and a wiring line given a reference potential of the memory system,
• the method comprising
• controlling a connection state between the signal line and the wiring line, on a basis of a change of a potential of the signal line from a first potential corresponding to a logical value H level to a second potential corresponding to a logical value L level or a change of the potential of the signal line from the second potential to the first potential.

A memory system including a nonvolatile memory, the memory system comprising:

• a connector portion connectable to a host;
• and
• a memory controller capable of executing a command received from the host through the connector portion and addressed to the memory,
• wherein the memory controller comprises:
• a signal line capable of transferring a signal sent from the host through the connector portion;
• a resistance element disposed between and electrically connected to the signal line and a wiring line given a reference potential of the memory system;
• a switching element connected serially to the resistance element and capable of switching a connection between the signal line and the wiring line given the reference potential;
• and
• a control circuit capable of controlling the switching element to disconnect the connection on a basis of a change of a state of a potential of the signal line.