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L6472 Datasheet(PDF) 32 Page - STMicroelectronics

Part # L6472
Description  dSPIN fully integrated microstepping motor driver
PDF  69 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6472 Datasheet(HTML) 32 Page - STMicroelectronics

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Functional description
L6472
32/69
Doc ID 022729 Rev 1
6.17.2
SYNC operation mode
The pin works as a synchronization signal when the SYNC_EN bit is set high. In this mode a
step-clock signal is provided on the output according to a SYNC_SEL and STEP_SEL
parameter combination (see Section 9.1.16).
6.18
FLAG pin
By default an internal open drain transistor pulls the FLAG pin to ground when at least one
of the following conditions occur:
●
Power-up or standby/reset exit
●
Overcurrent detection
●
Thermal warning
●
Thermal shutdown
●
UVLO
●
Switch turn-on event
●
Wrong command
●
Non-performable command.
It is possible to mask one or more alarm conditions by programming the ALARM_EN
register (see Table 22). If the corresponding bit of the ALARM_EN register is low, the alarm
condition is masked and it does not cause a FLAG pin transition; all other actions imposed
by alarm conditions are performed anyway. In the case of daisy chain configuration, the
FLAG pins of different ICs can be OR-wired to save host controller GPIOs.



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