Semiconductor device and method for controlling the same

摘要

A semiconductor device includes an operation unit (CPU) provided in a semiconductor chip and a temperature sensor (TS) that measures a temperature of the semiconductor chip. The semiconductor device compares a measured temperature (Ta) measured by the temperature sensor (TS) with a predetermined reference temperature (Tref). When the measured temperature (Ta) is higher than the reference temperature (Tref), the semiconductor device switches a frequency of an operation clock to be supplied to the operation unit (CPU) from a first frequency to a second frequency higher than the first frequency.

主权项

1. A semiconductor device comprising:
an operation unit provided in a semiconductor chip; a temperature sensor that measures a temperature of the semiconductor chip; a controller that compares the measured temperature measured by the temperature sensor with a predetermined reference temperature to output a control signal based on the comparison result; and a clock generation unit that generates an operation clock to be supplied to the operation unit based on the control signal, wherein the controller is configured to control, when the measured temperature is higher than the reference temperature, the clock generation unit to switch a frequency of the operation clock from a first frequency to a second frequency higher than the first frequency, and the operation unit outputs a first request, a second request, and an initializing signal, the controller calculating the reference temperature according to the first request, the controller acquiring the measured temperature according to the second request, and the controller being initialized according to the initializing signal.