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About information presented in this cross reference

The information presented in this cross reference is based on TOSHIBA's selection criteria and should be treated as a suggestion only. Please carefully review the latest versions of all relevant information on the TOSHIBA products, including without limitation data sheets and validate all operating parameters of the TOSHIBA products to ensure that the suggested TOSHIBA products are truly compatible with your design and application.
Please note that this cross reference is based on TOSHIBA's estimate of compatibility with other manufacturers' products, based on other manufacturers' published data, at the time the data was collected.
TOSHIBA is not responsible for any incorrect or incomplete information. Information is subject to change at any time without notice.

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查找您下一个设计所需要的一切。只需选择一个应用,然后单击以查看框图,即可找到我们的半导体解决方案。

OFD(振荡频率检测器)

ofd_e

OFD是东芝原创的频率检测器,在硬件层面检测异常振荡。它符合IEC 60730标准。外部振荡器的频率将始终通过参考时钟来测量,当频率超出预定范围时将产生复位。OFD不需要软件程序来操作,这与使用看门狗定时器大不相同。后者必须分配最高优先级的中断,并且需要一个子程序来检测振荡器的频率。OFD具有更多的功能特性,无需外部参考时钟,可使用寄存器值选择检测频率,检测时间最小为100us,当振荡器运行异常时,将复位微控制器。

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采用振荡频率检测器的微控制器产品如下。

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