Part Number:CC1310
Champs,
Customer observed the following issue with their cc1310 based product. One unit only (so far) experienced occasional failure after running correctly for any time between 15 min and 12 hours.
In one case the sensor controller stopped working and put the part into a state of higher current consumption. The remainder of the functionality continued (radio packets sent out). The plot below shows the current consumption of the device. The small spikes at the start are when the sensor controller wakes up to take a measurement. You can see that for some reason the current draw increases during these wakeups leading up to the failure event, at which point the baseline current consumption of the device increased and never recovered until the device was power cycled. Each spike in the plot is 100msec apart (the measurement rate the sensor controller runs at is fixed).
During another test a similar failure occurred, except this time the unit fully locked up, no further operation occurred. Note that the timescale in the following plot is longer as the failure occurs over a longer period of time (roughly 30 seconds shown below). The spikes seen in the previous plot are the dense spikes at the bottom of this plot. The current consumption of the sensor controller wakeups increased, recovered after a wakeup of the main processor but then locked up shortly after.
Plots are attached.
Question: do these symptoms look like they can be caused by Advisory 6?
We are working to experiment with increasing temperature gradient to try and make it occur more frequently to prove/disprove Advisory 6 theory.
Any insights/suggestions to debug will be greatly appreciated.
Thanks
Michael
