70 MIPs dsPIC33EP — what the core speed means for your control loop
The Microchip DSPIC33EP128GM306-I/PT is a 16-bit dsPIC33EP digital signal controller that runs at 70 MIPs — that's the instruction throughput you get when the core is clocked from the internal oscillator or an external source. For a motor-control or digital-power loop, 70 MIPs means the ADC can sample, the control law can compute, and the PWM can update within a single switching cycle at common PWM frequencies (e.g., 20 kHz to 100 kHz). The 30-channel 10-bit/12-bit ADC lets you monitor multiple phase currents and voltages in parallel.
Package and mounting — 64-TQFP with 53 I/O
The 53 available I/O lines give you enough headroom for a sensor interface, a keypad, and a parallel LCD or external memory bus if needed. Supply range is 3.0 V to 3.6 V, so a single 3.3 V rail works — just watch the brown-out detect threshold if you run near the low end.