Currently, the voltage is divided by the resistors of 6.8M and 1M.
For reference voltage diode (0.55V)
It is designed to reset at about 4.3V
(�� In the calculation of the voltage division ratio)
Actually, it resets at about 4.8 to 4.9V.

The resistance value is too high and the inflow of current is small.
Is there an error in the voltage judgment?