JTAG 2: Enabling

In order to enable JTAG we researched the CPU’s Bootstrapping Pins. Are Bootstrapping Pins a common feature on MCUs that we would expect to find on most devices or is this a rare occurrence and we just got lucky on this board?

Bootstrap pins are very common. What is uncommon is full documentation of them. It’s safe to assume that even on this device, there are additional undocumented bootstrap pins.