INTERRUPTION CONTROL UNIT

摘要

PROBLEM TO BE SOLVED: To provide an interruption control unit for avoiding transition to an unnecessary low power consumption mode without degrading the quality of software.

SOLUTION: The interruption control unit for controlling interruption receives an occurred interruption; receives a command related to transition from a processor for executing transition processing indicating an instruction of the transition to the low power consumption mode for decreasing power consumption; manages either an interruption prohibition state indicating the prohibition of interruption, an interruption allowed state during transition indicating allowed interruption during the transition processing, or an interruption allowed state indicating the allowed interruption except the interruption allowed state during the transition to receive the interruption when the interruption allowed state during transition is managed; and then abandons the transition instruction for instructing the transition to the low power consumption mode as a command related to the transition. Thus, the transition to the low power consumption mode is blocked.

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