L6472 datasheet(32/69 Pages) STMICROELECTRONICS

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Functional description

L6472

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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

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.

L6472 bảng dữ liệu(PDF) 32 Page - STMicroelectronics