techElder
Well-known member
I thought I knew everything, but PICAXE is always throwing a wrench at my head to confuse me. So, while waiting for my parts to arrive ...
There are mentions in the manuals about the 40X2 defaulting to 8MHz without an external resonator.
Then there are mentions about the PLL-based 4x frequency multiplier.
Which makes me think that to maintain the 8MHz operating frequency using an external resonator, I would have to install a 2MHz resonator. Is that the way it works?
So, if I put an 8MHz resonator on a 40X2, the operating frequency will be 32MHz. This means commands like PAUSE have to be adjusted because they are running quicker. Right?
I understand there are serial port setup parameters to use for 32MHz operation, too. I'll be using hSerin etc. in my project.
I also thought I read where the 40X2 can't be slowed down for certain commands that need a slower operating frequency, but now I can't locate that reference.
I'll be using more than one SLOT.
Besides the obvious increase in battery drain (not an issue for me), is there really any downside to running at 32MHz?
There are mentions in the manuals about the 40X2 defaulting to 8MHz without an external resonator.
Then there are mentions about the PLL-based 4x frequency multiplier.
Which makes me think that to maintain the 8MHz operating frequency using an external resonator, I would have to install a 2MHz resonator. Is that the way it works?
So, if I put an 8MHz resonator on a 40X2, the operating frequency will be 32MHz. This means commands like PAUSE have to be adjusted because they are running quicker. Right?
I understand there are serial port setup parameters to use for 32MHz operation, too. I'll be using hSerin etc. in my project.
I also thought I read where the 40X2 can't be slowed down for certain commands that need a slower operating frequency, but now I can't locate that reference.
I'll be using more than one SLOT.
Besides the obvious increase in battery drain (not an issue for me), is there really any downside to running at 32MHz?