Motorola M68HC08 manual Stop State Fault State

Freescale Semiconductor, Inc.

Freescale Semiconductor, Inc.

Software Design

5.5.7 Stop State

When motor stop is required, the PWM signals are disabled and the power switches are switched off. The state diagram for this state is shown in

Figure 5-12.

ENTER

MOTOR STOP IS REQUIRED (STOP_F = 1)

TIMER1 (TIM A CH1) INTERRUPT

MOTOR IS STOPPED	CURRENT MEASUREMENT
PWM IS OFF
	IS DONE
CURRENT MEASUREMENT	(CMD_F=1)
ISR

EXIT

Figure 5-12. STOP State

5.5.8 Fault State

If over-voltage, over-current, or commutation fault occurs, the motor control PWM’s are disabled and control enters the fault state, where it remains until RESET or clear failure (start switch set OFF or PCMode&ClearFail). The fault state is indicated by the Red LED diode blinking.

Clear Failure Test

Designer Reference Manual		DRM028 — Rev 0
102	Software Design	MOTOROLA
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