EVAL6470H Datasheet, PDF (52/70 Pages) STMicroelectronics – dSPIN fully integrated microstepping motor driver with motion engine and SPI

Programming manual
L6470
Table 29.
0
0
0
0
1
1
1
1
PWM frequency: multiplication factor
F_PWM_DEC [2..0]
0
0
0
1
1
0
1
1
0
0
0
1
1
0
1
1
Multiplication factor
0.625
0.75
0.875
1
1.25
1.5
1.75
2
In the following tables all available PWM frequencies are listed according to oscillator
frequency, F_PWM_INT and F_PWM_DEC values (CONFIG register OSC_SEL parameter
must be correctly programmed).
Table 30. Available PWM frequencies [kHz]: 8-MHz oscillator frequency
F_PWM_DEC
F_PWM_
INT
000
001
010
011
100
101
110
111
000
9.8
11.7
13.7
15.6
19.5
23.4
27.3
31.3
001
4.9
5.9
6.8
7.8
9.8
11.7
13.7
15.6
010
3.3
3.9
4.6
5.2
6.5
7.8
9.1
10.4
011
2.4
2.9
3.4
3.9
4.9
5.9
6.8
7.8
100
2.0
2.3
2.7
3.1
3.9
4.7
5.5
6.3
101
1.6
2.0
2.3
2.6
3.3
3.9
4.6
5.2
110
1.4
1.7
2.0
2.2
2.8
3.3
3.9
4.5
Table 31. Available PWM frequencies [kHz]: 16-MHz oscillator frequency
F_PWM_DEC
F_PWM_INT
000
001
010
011
100
101
110
111
000
19.5
23.4
27.3
31.3
39.1
46.9
54.7
62.5
001
9.8
11.7
13.7
15.6
19.5
23.4
27.3
31.3
010
6.5
7.8
9.1
10.4
13.0
15.6
18.2
20.8
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