Hello1. there are no board products in ST web based on STN32F765XX silicon dedicate.2. there is a NUCLEO product NUCLEO-F767ZI3. 765 VS 767, from the datasheet, they are with the same core and similar performance.to sum up, no board product available...
1. Regarding the resistance matching, it depends on the width of the signals, the stack, the process of PCB manufacturing company. I can't judges if the width is ok or not, I suggest you to communicate with PCB manufacturing company: make it clear th...