Using Reset pin as input port (via ground key), why can not read low level?
1.Check Reset_Pin in Code Option if it is chosen right;
2.For OTP MCU,
this pin can only be used as input port, and with no pull-up resistor built-in, user
must confirm that the circuit has an external pull-up resistor;
3.Flash
MCU Reset pin has different design, for detailed information please refer to datasheet.