Renesas Electronics Corporation

Takahiko Gomi

Ryu Nagasawa

Tetsuya Suzuki

Gaku Inami

The CPU includes a plurality of CPU cores. The temperature determination unit determines whether or not the temperature indicated by the acquired temperature information is equal to or higher than a threshold value. When it is determined that the temperature indicated by the temperature data is equal to or higher than the threshold value, the thermal generation control unit performs thermal generation control on the CPU. The group data includes high-priority group information specifying a CPU core of a first group to which execute of a high-priority application is allocated in the CPU, and low-priority group information specifying a CPU core of a low-priority group to which execution of a low-priority application is allocated in the CPU. Based on the group data, the control target determining unit determines a CPU core to be subjected to thermal generation control from among the CPU cores of the low priority group.

Semiconductor device, thermo-control device, and methods

A semiconductor device is provided which can suppress heating while assigning performances to a plurality of modules whose heat generations are controlled while considering usage conditions of the plurality of modules. The semiconductor device includes a load detection unit that detects operation rates of the plurality of modules, a weighting calculation unit that calculates coefficients of the plurality of modules based on the operation rates of the plurality of modules, and a heat generation control unit that controls power consumptions of the plurality of modules based on the coefficients of the plurality of modules.

Semiconductor device, semiconductor system, and control method of the same

The semiconductor device includes a plurality of cores, a sensor for detecting a temperature, and a control circuit configured to obtain each power consumption of the respective cores so as to select the core as a control object in accordance with the obtained power consumption.

Semiconductor device and method of controlling semiconductor device including controlling a plurality of cores

An operating condition is controlled from viewpoints both processing capacity and power consumption. A CPUincludes, for example, a plurality of CPU coresto, and configured to such that an operating condition can be varied. A performance tableis a table representing a relationship between the operating condition of the CPUand the processing capacity of the CPU. A power consumption tableis a table representing a relationship between the operating condition of the CPUand power consumption. An operation control unitcontrols the operating condition of the CPUreferring to the performance tableand the power consumption table

Semiconductor device, operating condition controlling method, and non-transitory computer readable medium

A semiconductor device includes a mode determination unit configured to determine a power mode based on a temperature of the semiconductor device and a reference temperature, the power mode including one of a first mode which sets the operating frequency of the operation clock to be a first operating frequency and a second mode which sets the operating frequency of the operation clock to be a second operating frequency, and output a control signal according to the power mode to a clock generating unit.

Semiconductor device and method for controlling the same

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.

Growing community of inventors

Tokyo, Japan

Takahiko Gomi