STMicroelectronics Fully integrated stepper motor driver mounting the L6472 in a high power PowerSO package EVAL6472PD EVAL6472PD 数据表
产品代码
EVAL6472PD
DocID022729 Rev 3
47/70
L6472
Programming manual
70
9.1.15 OCD_TH
for details). The available range is from 375 mA to 6 A, steps of 375 mA, as shown in
9.1.16 STEP_MODE
The STEP_MODE register has the following structure:
The STEP_SEL parameter selects one of five possible stepping modes:
Every time the step mode is changed, the electrical position (i.e. the point of microstepping
sine wave that is generated) is reset to the first microstep.
sine wave that is generated) is reset to the first microstep.
Warning:
Every time STEP_SEL is changed the value in the ABS_POS
register looses meaning and should be reset.
register looses meaning and should be reset.
Table 18. Overcurrent detection threshold
OCD_TH [3 … 0]
Overcurrent detection threshold
0 0 0
0
375
mA
0 0 0
1
750
mA
…
…
…
…
…
1 1 1
0
5.625
A
1 1 1
1
6
A
Table 19. STEP_MODE register
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
SYNC_EN SYNC_SEL
1
(1)
1. When the register is written this bit should be set to 1.
When the STEP_MODE register is written, the bit #3 is to be set to 1, otherwise anomalous
behaviors could occur.
STEP_SEL
Table 20. Step mode selection
STEP_SEL[2 … 0]
Step mode
0 0 0
Full-step
0 0 1
Half-step
0 1 0
1/4
microstep
0 1 1
1/8
microstep
1 X X
1/16
microstep