Other Parts Discussed in Thread: INA226
INA226AQDGSRQ1 的ALERT工作机制是怎样的,是通过IIC设定阈值,然后进行警报嘛,设定电压电流值。?
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您好,以下五种警报情况都会触发Alert机制。可通过寄存器07h Alert Limit Register (07h) 配置警报极限值。这些警报功能中只能有一个一次启用和监控。如果启用了多个功能,则处于MSB优先并响应警报限值寄存器的值。 寄存器06h可以启用这些功能。 比如SOL和SUL同时启用,则SOL的优先级比较高,也就是shunt voltage register当超过警报寄存器(07h)中设置的极限值时,Alert 引脚会响应。具体介绍可以参考datasheet 7.3.1.2 Alert pin的介绍:
Shunt Voltage Over-Limit (SOL) •
Shunt Voltage Under-Limit (SUL) •
Bus Voltage Over-Limit (BOL) •
Bus Voltage Under-Limit (BUL) •
Power Over-Limit (POL)