DIMI口电压是多少伏,调光PWM是只要DIMI管脚输入后就好,有没有记忆功能,还是需要一直输出PWM
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Hi
DIM电压规格见datasheet第6页:DIM COMPARATOR, 大于2.2V为高,低于0.8V为低,所以一般都是I/O口3.3V/0V的PWM信号来控制。
DIM为调光信号,高3.3V时LED有输出满亮度, 低(0V)LED 最低亮度即无LED电流. PWM占空比即控制LED亮度(持续3.3V为100%亮度,持续0V为0%亮度)。
所以DIM信号是持续的。