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Resonator 16.00MHZ vs Crystals 16MHz

raymond3080

Resonator 16.00MHZ vs Crystals 16MHz
March 06, 2012 10:12PM

Registered: 12 years ago
Posts: 5

Hey everyone,
I am assembling my sanguinololu board v1.3. for what ever reason I must have not ordered the 16mhz resonator. I do how ever have 16mhz crystals. Is it possible for me to use my crystal?

[ca.mouser.com]

It fits in fine under the DIP socket. Going to be using the 1284P

Thanks!

Edited 1 time(s). Last edit at 03/06/2012 10:19PM by raymond3080.

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royco

Re: Resonator 16.00MHZ vs Crystals 16MHz
March 07, 2012 11:19AM

Registered: 12 years ago
Posts: 156

Yes it is ok to use crystals but you need to place bypass caps appropriate for the crystal to ground. Something between 18pf to 22 pf for most applications. The resonators has them already built in the case. Just so you know picking the wrong value of caps can mess up your uController timing.

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raymond3080

Re: Resonator 16.00MHZ vs Crystals 16MHz
March 07, 2012 12:01PM

Registered: 12 years ago
Posts: 5

Alright I have some .22pf 50v ceramic caps in my parts bin. What would be the best way to add them into the circuit?

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raymond3080

Re: Resonator 16.00MHZ vs Crystals 16MHz
March 08, 2012 02:34AM

Registered: 12 years ago
Posts: 5

I just flipped the crystal on to the back and put two 0402 .22pf caps on there...hopefully it works!

DSC02165.JPG

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royco

Re: Resonator 16.00MHZ vs Crystals 16MHz
March 08, 2012 11:01AM

Registered: 12 years ago
Posts: 156

its 22pf not .22pf as you wrote. You mean 22pf right?

Connect each cap to each leg going to ground.

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GowthamJGR

Re: Resonator 16.00MHZ vs Crystals 16MHz
June 25, 2013 10:34AM

Registered: 12 years ago
Posts: 55

I bought a resonator with 16MHz and 15pF (bought wrong) can I use those resonator to my sanguinololu1.3a with Atmega1284p with some modification in firmware or Arduino compilation ?

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lajos

Re: Resonator 16.00MHZ vs Crystals 16MHz
June 25, 2013 09:30PM

Registered: 10 years ago
Posts: 180

Your resonator should work fine. Look at the atmega1284P datasheet page 32/33 for more info.

You don't need to make any modification to your Sanguino nor the firmware.

Edited 4 time(s). Last edit at 06/25/2013 09:37PM by lajos.

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GowthamJGR

Re: Resonator 16.00MHZ vs Crystals 16MHz
June 26, 2013 10:11AM

Registered: 12 years ago
Posts: 55

Thanks Lajos
Its working good now spinning smiley sticking its tongue out