STMicroelectronics Fully integrated stepper motor driver mounting the L6472 in a high power PowerSO package EVAL6472PD EVAL6472PD Fiche De Données

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where DEC is the integer number stored in the register and tick is 250 ns.

The available range is from 14.55 to 59590 step/s

2

 with a resolution of 14.55 step/s

2

.

When the device is working in infinite acceleration mode this value is ignored.

Any attempt to write the register when the motor is running causes the command to be 
ignored and the NOTPERF_CMD flag to rise (see 

The MAX_SPEED register contains the speed profile maximum speed expressed in 
step/tick (format unsigned fixed point 0.18).

In order to convert it in step/s the following formula can be used:

where MAX_SPEED is the integer number stored in the register and tick is 250 ns.

The available range is from 15.25 to 15610 step/s with a resolution of 15.25 step/s.

The MIN_SPEED register contains the following parameters:

         

The MIN_SPEED parameter contains the speed profile minimum speed. Its value is 
expressed in step/tick and to convert it in step/s the following formula can be used:

where MIN_SPEED is the integer number stored in the register and tick is the ramp 250 ns.

The available range is from 0 to 976.3 step/s with a resolution of 0.238 step/s.

Any attempt to write the register when the motor is running causes the NOTPERF_CMD flag 
to rise.

The FS_SPD register contains the threshold speed. When the actual speed exceeds this 
value the step mode is automatically switched to full-step two-phase on. Its value is 

step s







DEC 2

40

–



tick

2

-----------------------------

=

step s







MAXSPEED 2

18

–



tick

---------------------------------------------------

=

0 MIN_SPEED

step s







MINSPEED 2

24

–



tick

-------------------------------------------------

=