An on-chip POR (Power on Reset) circuit is included which holds the part in reset until the voltage is above a level where all sections of the part can operate correctly. On power down it will again put the part in Reset when the supply drops below these levels. A three phase PWM is included on-chip for use in simple brushless DC motor control. The 3 phase PWM can also be configured to give single PWM outputs. Finally, the number of GPIO pins vary from part to part with a maximum of 40 available on the ADuC7026.