Q-ten

I also recall a situation where a unit would not power on from the battery (fully charged) but in a previous revision of the hardware (purchased from Mouser in early...

I have a bit more information around events when the RTC reset. 4:10pm: shut down unit via software. vbat is 3.123. Set rtc wake time to 1am. Appears to shut...

I've been looking into possible explanations for the behaviour I'm seeing and came across the errata document for the micro: (See [https://www.ti.com/lit/er/slaz168o/slaz168o.pdf](https://www.ti.com/lit/er/slaz168o/slaz168o.pdf)) 1. Does anyone know whether the BCL12 workaround...

Thanks for your very helpful response! 1. BCL12. Given the post-boot frequency changes are from 8MHz to 14MHz that map to RSEL 13 and 14, I agree this wouldn't explain...

Having gone through all that, I think we've ruled out these errata from causing a lockup. But _something_ is causing lockups. It's something I see very occassionaly on deployed units...

I see that test point D is connected to _RST. But it can be configured as an interrupt. Would it be possible to use that test point to reset the...

Thanks for these ideas. That's a good thought on the first point, but no, it really did seem to reset approx 9.5 hrs earlier when no-one was near it and...

I have some more information. I've tested a couple of units (rev 8) that have been returned and discovered that they are leaking current when off. One unit was leaking...

Well this is interesting. I removed U4 on that unit where VBSW wasn't working.... It fixed the current leak. I tested it immediately before, and the current leak was 6.04mA...

I don't think I was asking much of U4. It would have been drawing about 500mA from the battery, but it does see an inductor. It's connected to a boost...