STM32L IWDG reload with different prescaler

Posted on August 06, 2014 at 23:31

Hi everyone,

In my project, i need to use iwdg. I use 2 iwdg init function.

Prescaler is 256 and reload is 15seconds for the first one.

Prescaler is 32 and reload is 1.45seconds for the second one.

Both of them is working when I am using 32MHz cpu clock, however, the second one is not work when I use 4MHz cpu clock.

What could be the possible mistake?

Best regards

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