If you are in the electronics or microcontroller business: you very well know the problems with chip and silicon availability. What was supposed to last maybe for a few months starting with COVID-19 is still a problem in 2022: chips are not available or the price has skyrocket.

We at the Lucerne University are using NXP Kinetis micro controllers which seem to be affected by the silicon shortage somewhat more than any other devices? When looking that the usual sources, it was clear some are still available, but in a rather exotic WLCSP package. So the question is: can it be useful?