I am using the PWM output of a PIC 16F1519 to drive a simple voltage inverter at 20 KHz. For simulation, I added a 220 Ω resistor in series with the 10µ input capacitor. Of course, the max allowed current from any pin is 25 mA. Maximum current in the simulation is about 22 mA for a few mS. I would like to get rid of the resistor to speed start-up. But, I cannot find what the actual output impedance for the pins is.
This link (http://www.microchip.com/forums/m479138.aspx) suggests that it is several hundred ohms, which would mean the pin could be shorted without damage to the chip.
Does anyone know the output impedance? Can the pins actually be shorted without damage?
John
This link (http://www.microchip.com/forums/m479138.aspx) suggests that it is several hundred ohms, which would mean the pin could be shorted without damage to the chip.
Does anyone know the output impedance? Can the pins actually be shorted without damage?
John