Semiconductor storage with two power source paths

A semiconductor storage, comprising:

• two power source paths that include:
• a first power source path that includes a first power gate transistor and a first current source transistor, wherein the first power gate transistor and the first current source transistor are coupled in series;
• a second power source path that includes a second power gate transistor;
• a connection path that connects an end of each of the two power source paths;
• a storage element;
• a switch element between the connection path and the storage element, wherein a back gate is coupled to an internal node in the second power gate transistor;
• and
• a control circuit configured to:
• control each of the first power gate transistor, the first current source transistor, the second power gate transistor, and the switch element;
• select one of the first power source path or the second power source path based on the control of each of the first power gate transistor, the first current source transistor, the second power gate transistor, and the switch element;
• supply, via the switch element, current from the selected one of the first power source path or the second power source path to the storage element;
• and
• write on the storage element based on the supplied current.