Motorola M68HC08 manual Running State

Semiconductor, Inc.

Freescale Semiconductor, Inc.

Software Design

State Diagram

		ENTER	EXIT
			MOTOR STOP IS REQUIRED
		T3 TIME-OUT	(STOP_F = 1)
SPEED CONTROL		(T3_F = 1)	CURRENT MEASUREMENT
			IS DONE
	DONE		MEASUREMENTS
	DONE		(CMD_F=1)	HANDLER
		SCHEDULER	DONE
ERROR HANDLER	DONE		PHASE HAS BEEN

		COMMUTATED (PC_F = 1)
RECEIVED	DONE
THE ZERO CROSSING EVENT
		DONE
(ICR_F = 1)
		SERVICE OF COMMUTATION
SERVICE OF RECEIVED
BACK-EMF ZERO CROSSING
	FEEDBACK

Freescale

IRRECOVERABLE COMMUTATION ERROR

TIMER2 (TIM A CH3) INTERRUPT

FAULT STATE

OVER-CURRENT

PWM RELOAD INTERRUPT (PWM CENTER)

COMMUTATION

ISRBEMF ZERO CROSSING SENSING ISR

DONE

PHASE HAS BEEN	TIMER1 (TIM A CH1) INTERRUPT
COMMUTATED (PC_F = 1)	(ICR_F = 1)

CURRENT MEASUREMENT

ISR

CURRENT MEASUREMENT IS DONE

(CMD_F = 1)

Figure 5-11. Running State

DRM028 — Rev 0		Designer Reference Manual
MOTOROLA	Software Design	101
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