Renesas Electronics Corporation

Ryu Nagasawa

Takahiko Gomi

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

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Tokyo, Japan

Ryu Nagasawa