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L6474H Datasheet(PDF) 5 Page - STMicroelectronics

No. de pieza L6474H
Descripción Electrónicos  easySPIN ??fully integrated microstepping motor driver
Download  51 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6474H Datasheet(HTML) 5 Page - STMicroelectronics

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L6474
List of figures
Doc ID 022529 Rev 2
5/51
List of figures
Figure 1.
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 2.
HTSSOP28 pin connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 3.
POWERSO36 pin connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 4.
Bipolar stepper motor control application using L6474 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 5.
Charge pump circuitry. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 6.
Normal mode and microstepping (16 microsteps) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 7.
OSCIN and OSCOUT pin configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 8.
Internal 3 V linear regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 9.
Peak current control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 10.
Adaptive decay - fast decay tuning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 11.
Adaptive decay - switch from normal to slow+fast decay mode and vice versa . . . . . . . . . 28
Figure 12.
Fast decay tuning during the falling steps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 13.
SPI timings diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 14.
Daisy-chain configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Figure 15.
Command with three-byte argument . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Figure 16.
Command with three-byte response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Figure 17.
Command response aborted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Figure 18.
HTSSOP28 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Figure 19.
POWERSO36 drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49


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