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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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L6470 데이터시트(PDF) 33 Page - STMicroelectronics |
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L6470 데이터시트(HTML) 33 Page - STMicroelectronics |
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33 / 70 page  L6470 Functional description Doc ID16737 Rev 4 33/70 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 occurs: ● Power-up or standby/reset exit ● Stall detection on A bridge ● Stall detection on B bridge ● 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 Section 9.1.20, Table 21). 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, FLAG pins of different ICs can be or-wired to save host controller GPIOs. |
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