公开(公告)号：US20150019779A1

公开(公告)日：2015-01-15

申请号：US14328154

申请日：2014-07-10

Applicant: Renesas Electronics Corporation

Inventor： Takuya HIRADE ,  Yukitoshi TSUBOI ,  Ryosuke OKUDA

IPC: G06F13/24

CPC classification number: G06F13/24 ,  G06F11/2231 ,  G06F11/2273 ,  Y02D10/14

Abstract: To detect an abnormality in an interrupt control system without completely depending on dualization of a circuit, without the need to create a test pattern for a built-in self-test by spending time, and without considerably increasing an amount of power consumption. A test interrupt request is generated periodically using a timer or the like in an interrupt signal system from an interrupt controller to a central processing unit, the state of an interrupt request flag within the interrupt controller is checked in an interrupt processing routine, and in the case where it is detected that the same interrupt request flag is kept in a set state twice or more in succession, it is supposed that there is a high possibility that a failure has occurred in the interrupt signal system and it is considered that there is an abnormality.

Abstract translation: 检测中断控制系统中的异常，而不用完全依赖于电路的二次化，而无需通过花费时间创建内置自检的测试模式，而不会大大增加功耗。 在从中断控制器到中央处理单元的中断信号系统中，使用定时器等周期性地生成测试中断请求，在中断处理程序中检查中断控制器内的中断请求标志的状态，在 检测到相同的中断请求标志被连续地保持在设定状态两次或更多的情况下，假设在中断信号系统中出现故障的可能性很高，并且认为存在 异常

公开(公告)号：US20170242809A1

公开(公告)日：2017-08-24

申请号：US15588246

申请日：2017-05-05

Applicant: RENESAS ELECTRONICS CORPORATION

Inventor： Takuya HIRADE ,  Yukitoshi TSUBOI ,  Ryosuke OKUDA

IPC: G06F13/24 ,  G06F11/22

CPC classification number: G06F13/24 ,  G06F11/2231 ,  G06F11/2273 ,  Y02D10/14

Abstract: To detect an abnormality in an interrupt control system without completely depending on dualization of a circuit, without the need to create a test pattern for a built-in self-test by spending time, and without considerably increasing an amount of power consumption. A test interrupt request is generated periodically using a timer or the like in an interrupt signal system from an interrupt controller to a central processing unit, the state of an interrupt request flag within the interrupt controller is checked in an interrupt processing routine, and in the case where it is detected that the same interrupt request flag is kept in a set state twice or more in succession, it is supposed that there is a high possibility that a failure has occurred in the interrupt signal system and it is considered that there is an abnormality.