Semiconductor integrated circuit device and electronic device

A semiconductor integrated circuit device comprising:

• at least one data holding circuit;
• a combinational circuit including a plurality of logic gate circuits and for receiving an output of the data holding circuit;
• a high potential power supply line and a low potential power supply line;
• a first pseudo-power supply line connected via a first power control transistor to the high potential power supply line;
• and
• a second pseudo-power supply line connected via a second power control transistor to the low potential power supply line,
• wherein, of the plurality of logic gate circuits of the combinational circuit, one outputting “L” when the output of the data holding circuit has a predetermined fixed value has a high potential-side power supply end connected to the first pseudo-power supply line and a low potential-side power supply end connected to the low potential power supply line, and one outputting “H” when the output of the data holding circuit has the predetermined fixed value has a high potential-side power supply end connected to the high potential power supply line and a low potential-side power supply end connected to the second pseudo-power supply line,
• the data holding circuit can continue to hold data during cut-off of power supply which turns off the first and second power control transistors, and
• the data holding circuit receives a control signal, and when obtaining a predetermined value as the control signal, the data holding circuit can output the predetermined fixed value.