Patent ID: 8000923

Claim:
A trimming test method of a thermal sensor which is provided in a semiconductor integrated circuit including a system that uses first and second power source voltages independently, the thermal sensor being provided in a first area different from a second area, the method comprising: supplying the first power source voltage to the first area without supplying the second power source voltage to the second area in a first mode; inputting first trimming data to the thermal sensor making use of a first input path disposed in the first area; calibrating the temperature of the thermal sensor based on the first trimming data; supplying the first power source voltage to the first area and the second power source voltage to the second area in a second mode; inputting second trimming data different from the first trimming data to the thermal sensor making use of a second input path disposed in the second area; and trimming the temperature of the thermal sensor based on the second trimming data.