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Regular Guy
Joined: 04 Jun 2017 Posts: 110
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Oscilloscope Measurements 10F200 |
Posted: Wed Jan 26, 2022 1:17 pm |
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Will a PIC 10F200 work to measure?
If we put it on a breadboard with power only.
Then find the Clock out pin.
Figure the default is 4 MHZ internal oscillator.
Will we have a 4 MHZ square wave to measure? _________________ PIC Hobbyist |
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temtronic
Joined: 01 Jul 2010 Posts: 9168 Location: Greensville,Ontario
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Posted: Wed Jan 26, 2022 1:53 pm |
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yes, though you should try it...
You will of course have to PROGRAM the PIC first. Set internal clk, forever do nothing loop in main()
and see what pin has the clkout on it.
You won't get 4.000000 MHz either. it will be 'off' a bit.
Check the datasheet specs for the 'range' that 4MHz can be. |
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Regular Guy
Joined: 04 Jun 2017 Posts: 110
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Posted: Wed Jan 26, 2022 2:06 pm |
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Thank you temtronic
One thing.
Think we will jump up to a normal PIC like 16F872.
Since we have to program it anyhow.
We are set up for that.
We might have lucked out. Here is pin 10 on 16F872.
OSC2/CLKOUT
Might default to being measurable.
We will have a crystal and 2 capacitors on OSC1 and OSC2.
In assembler it is:
LOOP
GOTO LOOP
There are other one line ways. I think.
But might get by with not programming it.
Trying to keep workbench clear for USB oscilloscope.
Eats up a USB port. _________________ PIC Hobbyist |
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temtronic
Joined: 01 Jul 2010 Posts: 9168 Location: Greensville,Ontario
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Posted: Wed Jan 26, 2022 3:56 pm |
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Even with that PIC, you'll have to program it.
Although the default is RC osc, so clkout is active, but RC osc is not 'stable' or 'accurate'.
It's very unclear what you're trying to accomplish.
A better description would allow us to offer possible solutions. |
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Regular Guy
Joined: 04 Jun 2017 Posts: 110
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Posted: Wed Jan 26, 2022 9:16 pm |
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Thank you temtronic
Looks like the OSC pin on 16F872 is what we are looking for.
Believe that is what we measured one time.
Little matter of learning how to use USB oscilloscope again.
Will keep everybody posted.
Thanks! _________________ PIC Hobbyist |
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