L6480 datasheet(56/73 Pages) STMICROELECTRONICS

部件名	L6480

功能描述	The L6480, realized in analog mixed signal technology, is an advanced fully integrated solution suitable for driving two-phase bipolar stepper motors with microstepping.

PDF	73 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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56 / 73 page

Programming manual

L6480

56/73

Doc ID 023278 Rev 3

The F_PWM_DEC bits set the multiplication factor of PWM frequency generation.

In the following tables all available PWM frequencies are listed according to oscillator

frequency, F_PWM_INT and F_PWM_DEC values (the CONFIG register OSC_SEL

parameter must be correctly programmed).

101

110

111

Table 39.

PWM frequency: multiplication factor

F_PWM_DEC [2..0]

Multiplication factor

0.625

0.75

0.875

1.25

1.5

1.75

Table 40.

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 38.

PWM frequency: integer division factor (continued)

F_PWM_INT

[2..0]

Integer division factor

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