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External crystal failure detection in LPC546xx

Question asked by Prasanna Naik on Jun 21, 2019
Latest reply on Jun 28, 2019 by Brendon Slade


   I am using LPC54608J512BD208 in an application. The controller clock is derived from external crstal of 20 MHz and stepped up through PLL at 100 MHz. Is there any way to detect the external crstal failure so that the controller can be switched to internal clock FROH.



Thanks and best regards,