POWERSTEP01 datasheet(37/92 Pages) STMICROELECTRONICS

Part #	POWERSTEP01

Description	System-in-package integrating microstepping controller and 10 A power MOSFETs

PDF	92 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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37 / 92 page

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powerSTEP01

Functional description

7.20

BUSY/SYNC pin

This pin is an open-drain output which can be used as busy flag or synchronization signal

according to the SYNC_EN bit value (STEP_MODE register) (see Section 11.1.23 on page

61).

7.21

FLAG pin

By default, an internal open-drain transistor pulls the FLAG pin to ground when at least one

of the following conditions occurs:



Power-up or standby/reset exit



Stall detection on bridge A



Stall detection on bridge B



Overcurrent detection



Thermal warning



Thermal shutdown



UVLO



UVLO on ADC input



Switch turn-on event



Command error

It is possible to mask one or more alarm conditions by programming the ALARM_EN

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.

POWERSTEP01 Datasheet(PDF) 37 Page - STMicroelectronics