I’ve been using the AB1805 watchdog per an application note AN023 Watchdog Timers | Datasheets | Particle
I’ve been very happy with the approach and haven’t had a Boron in the field go offline since.
However, as I order my next batch of boards, it seems this component has extended lead times due to the Silicon supply chain shortages. Does anyone know a suitable replacement with minimal firmware/hardware changes? Right now trying to decide between… delaying the PCBA order until the parts are in stock or continuing with the order but without the Watchdog functionality. Normally, I’d just proceed with the order and then hand solder on the parts when they come in but in this case, it’s tiny 16-VFQFN that I wouldn’t know how to solder myself once the parts are available again.
Since I’m not the only one using this design, I figured I’d ask the community of any known alternatives or workarounds. I’d rather not deploy devices in the field without this functionality but not sure on what options I have.
Any suggestions or guidance is appreciated!