Patent ID: 9620177
Date: 2017-04-11
CPC Classifications: G11C

Claim:
1. A semiconductor device comprising: a reference potential generating circuit generating a plurality of reference potentials in parallel to each other, the reference potentials being different in temperature dependency from each other; a control circuit that selects one of the reference potentials; an internal voltage generating circuit that generates a power supply voltage with reference to the one of the reference potentials; and an internal circuit that is supplied with the power supply voltage, wherein the reference potential generating circuit includes a voltage generating circuit that generates a first voltage having a temperature dependency and second and third voltages having no temperature dependency, and is configured to be capable of selecting a voltage value of the second voltage, a voltage value of the third voltage, a change coefficient to be multiplied by a fourth voltage that is obtained by subtracting the second voltage from the first voltage, and a sign of a fifth voltage that is obtained by multiplying the change coefficient by the fourth voltage, and the reference potential is generated by adding the third voltage to the fifth voltage.