Semiconductor device and control method of the same

A semiconductor device comprising:

• first and second resistor parts connected in series between a first power supply and a second power supply;
• an output node provided between the first and second resistor parts a reference voltage being output via the output node;
• a feedback node provided between the first power supply and the first resistor part;
• a voltage control circuit that maintains a voltage of the feedback node at a constant level by using the reference voltage of the output node and the voltage of the feedback node;
• a memory cell connected to the output node;
• a voltage generating circuit that generates a voltage applied to the memory cell by using the reference voltage, wherein the reference voltage is used for reading data from the memory cell;
• and
• a switch that is coupled with the output node and causes the reference voltage to be generated in response to a change of an address that specifies the memory cell.

A method of controlling a semiconductor device equipped with first and second resistor parts connected in series between a first power supply and a second power supply;

• an output node provided between the first and second resistor parts, a reference voltage being output via the output node;
• and a feedback node provided between the first power supply and the first resistor part, the method comprising the steps of:
• maintaining a voltage of the feedback node at a constant level by using the reference voltage of the output node and the voltage of the feedback node;
• outputting the reference voltage via the output node;
• generating a voltage applied to a memory cell using the reference voltage;
• reading data from the memory cell using the reference voltage;
• and
• generating the reference voltage in response to a change of address that specifies the memory cell.