| 摘要 |
<p>Provided are a storage device, substrate, liquid container and system capable of efficiently detecting connection without increasing the number of terminals. A storage device (100) comprises a storage unit (130), a storage control unit (120) for controlling access to the storage unit (130), a control unit (110) for processing communication with a host device, a data terminal (SDA), a reset terminal (XRST), and a clock terminal (SCK). The control unit (110) determines that the mode of operation is regular communication mode if the voltage level of the reset terminal (XRST) changes from a voltage level indicating a reset state to a voltage level indicating a reset-override state during a period in which the voltage level of the clock terminal (SCK) is at a first voltage level, and determines that the mode of operation is connection detection mode if the voltage level of the reset terminal (XRST) changes from the voltage level indicating the reset state to the voltage level indicating the reset-override state during a period in which the voltage level of the clock terminal (SCK) is at a second voltage level.</p> |
