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    • 10. 发明授权
    • Data processing device, semiconductor integrated circuit device, and abnormality detection method
    • 数据处理装置,半导体集成电路装置及异常检测方法
    • US08392643B2
    • 2013-03-05
    • US13034236
    • 2011-02-24
    • Ryoichi YamaguchiHisashi Abe
    • Ryoichi YamaguchiHisashi Abe
    • G06F13/24
    • G06F13/24
    • A data processing device for detecting the abnormal operation of a CPU is provided. The data processing device comprises a CPU, an interrupt counter, and a counter-abnormal-value detection circuit. The interrupt counter increments a count value based on an interrupt start signal which is outputted in response to an interrupt signal indicative of an interrupt request to the CPU and which indicates that the interrupt request has been accepted, and decrements the count value based on an end-of-interrupt signal which indicates that processing corresponding to the interrupt has completed. The counter-abnormal-value detection circuit detects abnormalities by comparing the count value with a predetermined value.
    • 提供了用于检测CPU的异常操作的数据处理装置。 数据处理装置包括CPU,中断计数器和反异常值检测电路。 中断计数器根据中断起始信号递增计数值,该中断起始信号响应于指示中断请求的中断信号被输出到CPU,并且指示中断请求已被接受,并且基于结束递减计数值 指示与中断相对应的处理完成的中断信号。 反异常检测电路通过将计数值与预定值进行比较来检测异常。