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Power Management ICs Forum Discussions

leonng
Level 2
25 sign-ins 5 questions asked 5 replies posted
Level 2

Hi there,

I enable NMI for alarm and ESR1

leonng_0-1657529892364.png

However, when I trigger a software alram, TLF35584 "sometime" will have an Interrupt due to "Pre-regulator voltage under voltage status flag" or "ommunication LDO under voltage status flag"  and WWD,MCU error. Why there will be a under voltage problem?

best regards,
Leon

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2 Replies
Nambi
Moderator
Moderator 100 replies posted 10 likes received 25 solutions authored
Moderator

Hi,

1. You can check the value of the alarm status register on triggering a software alarm to confirm the active alarms.

2. Can you configure "No Action" for the software alarm instead of an NMI and "No FSP" configured for this and check the behavior?

3. Could you elaborate more about "TLF35584 "sometime" will have an Interrupt due to "Pre-regulator voltage under voltage status flag" or "ommunication LDO under voltage status flag"  and WWD,MCU error. " ? From, where are these flags and errors read?

Best Regards.

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leonng
Level 2
25 sign-ins 5 questions asked 5 replies posted
Level 2

Thank you,

1. The software alarm is triggered.

2&3. 35584 will detect an error, it will make an interrupt and trigger ESR1 pin. Then, I will read 35584's register during NMI. Actually, The problem hasn't appeared in a while, and I don't know why...

I would like to know why the 35584 will detect an under voltage problem when I trigger an alarm?

best regards,
Leon

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