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MSP430F2001: Software breakdown after running for some days, no response in LPM4 mode

Part Number: MSP430F2001

Hi,

How to wake up MSP430F2001 from LPM4 mode? Can we wake it up by GPIO?

It has 10% failure issue in my customer that software is breakdown after running for 2 days. No response even trigger by GPIO. Watchdog is disabled. It can be recovered by reset or power on cycle.

Where should we focus on to check firstly? Thanks.

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