GM809/GM810 has a single microprocessor reset function, which is used for power supply detection of microprocessors (or other logic circuits). Send a reset signal to the microprocessor when powered on, powered off, and when the voltage drops. When the supply voltage is lower than the set threshold, a reset signal will be issued; When the supply voltage exceeds the threshold, a reset signal will be released. Used for embedded systems, power operating systems, wireless communication systems, handheld devices, etc.