STMicroelectronics Stepper motor driver mounting the L6474 in high power PowerSO package EVAL6474PD EVAL6474PD Hoja De Datos
Los códigos de productos
EVAL6474PD
Functional description
L6474
26/52
Doc ID 022529 Rev 3
6.16 SYNC
pin
This pin works as a synchronization signal: the output status is an echo of one of the bits of
the EL_POS register according to a SYNC_SEL and STEP_SEL parameter combination
(see paragraph
the EL_POS register according to a SYNC_SEL and STEP_SEL parameter combination
(see paragraph
).
6.17 FLAG
pin
By default, an internal open drain transistor pulls the FLAG pin to ground when at least one
of the following conditions occurs:
of the following conditions occurs:
●
Power-up or standby/reset exit
●
Overcurrent detection
●
Thermal warning
●
Thermal shutdown
●
UVLO
●
Switch turn-on event
●
Wrong command
●
Non performable command.
). 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 case of daisy-chain
configuration, FLAG pins of different ICs can be or-wired to save host controller GPIOs.
actions imposed by alarm conditions are performed anyway. In case of daisy-chain
configuration, FLAG pins of different ICs can be or-wired to save host controller GPIOs.