Semiconductor device

A semiconductor device, comprising:

• a first die, comprising a first switch having a first voltage input terminal and a first voltage output terminal, receiving input of a power voltage to the first voltage input terminal, and outputting the power voltage that is input from the first voltage output terminal when set to an ON state;
• and
• a second switch, having a second voltage input terminal and a second voltage output terminal, receiving, at the second voltage input terminal, input of the power voltage output from the first voltage output terminal of the first switch, and outputting, from the second voltage output terminal, the power voltage that is input when set to the ON state;
• and at least one retention flip-flop, having:
• a first power terminal, connected with the second voltage output terminal of the second switch;
• and a second power terminal, connected with the first voltage output terminal of the first switch, and maintaining data in a state in which the power voltage is supplied to the second power terminal and supply of the power voltage to the first power terminal is cut off.

A semiconductor device, configured to be connectible with a die provided with a switch that receives input of a power voltage at a voltage input terminal and outputs, from a voltage output terminal, the power voltage that is input when being in an ON state, the semiconductor device comprising:

• a first switch, having a first voltage input terminal and a first voltage output terminal, receiving, at the first voltage input terminal, input of the power voltage output from the voltage output terminal of the switch, and outputting, from the first voltage output terminal, the power voltage that is input when set to the ON state;
• and
• at least one retention flip-flop, having:
• a first power terminal, connected with the first voltage output terminal of the first switch;
• and a second power terminal, connected with the voltage output terminal of the switch, and maintaining data in a state in which the power voltage is supplied to the second power terminal and supply of the power voltage to the first power terminal is cut off.