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28035HRCAP的时钟频率的最低值是不是60MHZ?
还有
hrcap的计数器是16位，最大捕获时间值为1.092ms,如果我想要检测电网的频率50hz,那该怎么办啊？
16-bitHRCAPcaptureclock(HCCAPCLK)whichiseitherequaltothePLLoutputfrequency(asynchronoustoSYSCLKOUT)orequaltotheSYSCLKOUTfrequency(synchronoustoSYSCLKOUT).
