I'm considering moving on from UC3 A in my case, as it appears to be dead.
Looking at SAM E as a like for like replacement.
SAM E54 Xplained Pro evaluation kit - looks like a good board for learning.
+12bit ADC from 10bit
+Motor Control PWM Outputs
-Quadrature Encoder Interface (would have been nice)
-No sdram (Didn't use it anyway)
E53 chips have 64pinners that drop CAN
-----No sample projects in ASF! wtf! (This might be a killer)
Any comments, hate to invest into another dying chipset