CLK32IN16CLK32OUT15VIO3VIO22XIN1XOUT2EN_START32EN_STOP126EN_STOP225FIRE_DOWN6FIRE_IN7FIRE_UP5START31STOP130STOP227GND28GND21GND4SSN9SO12SI11SENSET17SCK10PT419PT320PT223PT124RSTN13LOADT18INTN8VCC29VCC14EP33