公开(公告)号：US20130232383A1

公开(公告)日：2013-09-05

申请号：US13856485

申请日：2013-04-04

Applicant: RENESAS ELECTRONICS CORPORATION

Inventor： Hiromichi YAMADA ,  Kotaro SHIMAMURA ,  Kesami HAGIWARA ,  Yoshikazu KIYOSHIGE ,  Yuichi ISHIGURO

IPC: G06F11/16

CPC classification number: G06F11/1608 ,  G06F11/004 ,  G06F11/1641 ,  G06F11/1687 ,  G06F2201/83 ,  G06F2201/845

Abstract: A microcontroller capable of improving processing performance as a whole by executing different programs by a plurality of CPUs and capable of detecting abnormality for safety-required processing by evaluating results of the same processing executed by the plurality of CPUs. A plurality of processing systems including CPUs and memories are provided, data output from the CPUs in each of the processing systems is separately compressed and stored by compressors for each of the CPUs, respectively. The compressed storage data is mutually compared by a comparator, and abnormality of processing can be detected when the comparison result indicates a mismatch. Even when the timings by which the same processing results are obtained are different when the plurality of CPUs asynchronously execute the same processing, the processing results of both of them can be easily compared with each other since compression is carried out by the compressors. Moreover, since the comparison of the comparator is enabled when comparison enable is given from all the CPUs, the comparison operation result can be obtained based on the timing at which the results of compression by the plurality of compressors are determined.

Abstract translation: 一种微控制器，其能够通过由多个CPU执行不同的程序来提高处理性能，并且能够通过评估由多个CPU执行的相同处理的结果来检测用于安全需要的处理的异常。 提供了包括CPU和存储器在内的多个处理系统，每个处理系统中的CPU输出的数据分别由用于每个CPU的压缩机压缩和存储。 压缩存储数据由比较器相互比较，当比较结果表示不匹配时，可以检测出异常处理。 即使当多个CPU异步地执行相同的处理时，获得相同处理结果的定时也是不同的，因此可以容易地将它们的处理结果彼此进行比较，因为压缩是由压缩器执行的。 此外，由于在从所有CPU给出比较使能时能够进行比较器的比较，所以可以基于确定多个压缩机的压缩结果的定时来获得比较运算结果。