How to calc max debug rate?

[circuitpro]

I'd like to know how to determine the maximum DEBUG baudrate using a PIC18F2420 running on an INTERNAL 8 MHz oscillator? Can someone help me out here?

[ScaleRobotics]

You can run debug at 38400 using 8 mhz, but I don't know the calculation.

Walter

[circuitpro]

I was hoping for 57600, but knew it would be close. I never know until I try, but can't do that until tomorrow. I just dont have the space on this board for an external xtal/osc.

[rmteo]

Turn on the PLL to get a 32MHz clock?

[circuitpro]

I've been reading that the clock frequency is not as stable and may need to be tuned over time. In this application, it's going to be pretty inaccessable and I need to be able to trust that the serial port will work reliably over time, so I've pretty much decided against the PLL.

[mackrackit]

I've been reading that the clock frequency is not as stable and may need to be tuned over time.

You are using the internal already, so PLLing will not change that.