The SHARC ADSP_214xx HRM has a chapter on Watchdog for the ADSP-2147x. Is it safe to assume that the ADSP-21489 (LQFP-176) operates exactly the same way, including the internal RC oscillator?
There is a difference between the WatchDog Timer of ADSP-21479 and ADSP-21489. The ADSP-21489 does not have the internal RC oscillator circuit. This needs to be used only with external input. I will update the HRM accordingly.
Can the watchdog timer on ADSP-21489 be disabled if not in use? Or it has to be used to supervise the software running?
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