Influence of Pin Setting on System Function and Performance
... difference in the rising edge can be seen; it is due to the low-pass filter structure formed by the relatively high-value pull-up resistor and the total capacitance of the pin and the connected circuit. The falling edge is sharp thanks to the internal transistor with much lower internal resistance. ...
... difference in the rising edge can be seen; it is due to the low-pass filter structure formed by the relatively high-value pull-up resistor and the total capacitance of the pin and the connected circuit. The falling edge is sharp thanks to the internal transistor with much lower internal resistance. ...