MSP430G2452: What does the WDT do if ACLK is selected without a clock source?

Errol Kowald

Part Number: MSP430G2452

If the WDT clock source is ACLK, and ACLK is sourced from the LFXT1 Oscillator with NO 32kHz crystal connected, what will happen when the WDT is enabled?

I would like to think that WDTIFG will be set and a PUC carried out, but I can find no information that covers this

over 3 years ago

0 David Schultz over 3 years ago

Guru 26465 points

10.2.5 Watchdog Timer+ Clock Fail-Safe Operation

0 JD Crutchfield over 3 years ago in reply to David Schultz

TI__Mastermind 30610 points

Here is the relevant section of the TRM that David pointed too.

Thanks,

0 Errol Kowald over 3 years ago in reply to JD Crutchfield

Intellectual 540 points

Thank you David & JD. I did read that when I first started looking into the WDT, and missed it's significance. The PUC DOES happen, but not in the way I assumed it should.

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MSP430G2452: What does the WDT do if ACLK is selected without a clock source?