DRV8803 Datasheet, PDF (19/26 Pages) Texas Instruments – QUAD LOW-SIDE DRIVER IC

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The Windows Application
DRV8803
DRV8804
DRV8805
Figure 18. DRV88003/04/05 Motor Control Windows
Stepper PWM Slide Bar – Appears on the DRV8803 and DRV8804. On the DRV8803 this sets all of the
INx PWM slide bars to whatever the Stepper PWM slide bar is set to. This controls the PWM rate of the
stepper. On the DRV8804, the stepper PWM controls the PWM rate of the stepper and calculates the
corresponding duty cycle which updates automatically as the slider is moved. If the user sets the % duty
cycle, the position of the slider is updated automatically.
Enable Motor Button – Appears on all three devices. This enables the motor and automatically toggles
the corresponding pin (see DRV88xx GPIO signals).
Reset Button – Appears on all three devices. This automatically sends the reset pin either HI (green) then
LO (red) or LO (red) then HI (green) effectively resetting your device. (Reset pin must be LO for motor to
operate – see DRV88xx GPIO signals).
Motor Direction Radio Buttons – Appears on all three devices. Always defaults to reverse direction on
default. Determines whether the motor is operating in forward or reverse direction. Automatically toggles
corresponding direction pin in the case of the DRV8805 (see DRV88xx GPIO signals).
Microstepping – Appears on the DRV8805. Determines the mode that the motor is operating in and
automatically toggles the corresponding SMx pin (see DRV88xx GPIO signals).
SLVU574A – September 2011 – Revised June 2012
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