STC12C5A60S2 internal concrete is how to use a flash, a countdown to the end is what I want to close the function of flowing water light, but it can power on the board, energizing continued after the last time the countdown to start with the rest of the time, which means that when the power is power save before operation, after the energizing state before the power to continue running, this how to implement, had never come into contact with flash this sort of thing, dear leaders, please come on