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Forum Index : Microcontroller and PC projects : Smaller 20mhz X-tal...
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Zonker Guru  Joined: 18/08/2012 Location: United StatesPosts: 767 |
Morning fine folks... I am trying to layout a new PCB that will use the PIC32-470 MCU... In the design, I wanted to try to use a smaller package X-tal than the normal oblong metal can type... Was wondering if this type would work OK... I am not an expert at this by any means and was looking for any advice on a possible selection... 20mhz Crystal - ABM8G.zip Much thanks...  |
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Grogster Admin Group  Joined: 31/12/2012 Location: New ZealandPosts: 9593 |
I don't see any reason why not. The PDF does say that you can specify in the part number, the load caps you plan to use, so I would be going for something like this one: LINK You would need to use 18pF caps instead of the 22pF used with the big crystal, but other then that, it should work perfectly. Naturally, I have not tested this myself, but there is no reason why it should not work. I have not looked at the frequency stability/tolerance vs the big crystal, but they are probably within a cat's whisker of each other. EDIT: Make link clickable. EDIT: Just checked the data for the TXC crystals I used in the MM+ stuff, and they have a frequency stability AND tolerance of +/-30ppm, so the Abracon crystal should be just about a perfect replacement for the through-hole one. The TXC crystals state 18pF load caps too, but I have been using 22pF on every board ever made, and never had an issue. Edited 2021-03-05 08:31 by Grogster Smoke makes things work. When the smoke gets out, it stops! |
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