Patent attributes
A storage device, a board, a liquid container, a system and the like are disclosed, which are capable of efficiently detecting a connection to a host device without an increase in the number of existing terminals. A storage device 100 includes: a storage section 130; a storage controller 120 that controls access to the storage section 130; a controller 110 that performs a communication process with the host device; a data terminal SDA; a reset terminal XRST; and a clock terminal SCK. The controller 110 determines that an operational mode is a normal communication/connection detection mode when a voltage level change of the reset terminal XRST indicates a change in a reset/reset-disabled state during a time period for the clock terminal SCK has specific voltage level(s).
