Looking for replacement part on AVR ONE probe

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Chupa
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Posted by Chupa: Tue. Jul 17, 2012 - 07:44 PM
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http://imgur.com/LSA6E

As you can see on the right hand side of the board I fried my probe some how. The marking on the part us not readable. Does anyone know what this part is so I can attempt to replace it? I could not find a schem or anything for this part online. A new probe is $100!

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AVR Microcontrollers, megaAVR and tinyAVR
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Chupa
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Posted by Chupa: Tue. Jul 17, 2012 - 09:17 PM
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And on a somewhat related note. Whats the difference between the ATAVRONE-PROBE and the ATAVRONE-PROBE-5V? As far as I know the ATAVRONE-PROBE is for up to 5.5V signals.

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abcminiuser
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Posted by abcminiuser: Wed. Jul 18, 2012 - 06:48 AM
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Quote:

As far as I know the ATAVRONE-PROBE is for up to 5.5V signals.

Both support up to 5V device target voltages through the JTAG connector. However, the AVRONE-PROBE only works to 3.3V through the Mictor38 edge connector while the ATAVRONE-PROBE-5V works to 5V on both. The advantage of the former over the latter is debugging speed, the lower maximum target voltage gives you a 200MHz debug speed vs. 75MHz.

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dbrion0606
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Posted by dbrion0606: Wed. Jul 18, 2012 - 02:05 PM
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Excuse me Monsieur Chupa, but what does the other IC (the one with 5 legs just above the fried one) do?

Do the other components (those with lots of tiny legs) need regulated power supply?

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Bronze MarkJohanEkdahl
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Posted by JohanEkdahl: Wed. Jul 18, 2012 - 03:05 PM
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Well, assuming those two 5-leg ICs are regulators, and that they are identical (dangerous assumption, I know) I Googled "217E" and "217F". FWIW, turns out there is an adjustable regulator called LM-217...

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dbrion0606
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Posted by dbrion0606: Wed. Jul 18, 2012 - 03:18 PM
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Quote:
dangerous assumption, I know

Well I made at least two other dangerous assuptions:

* that what caused a mysterious IC to fry was known and removed.

* that every other part near the burnt mysterious IC (I think of R dividers to have a proper voltage, capacitors...) did not suffer (neither did the other many legged circuits).

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Chupa
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Posted by Chupa: Sat. Jul 21, 2012 - 05:40 PM
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I pulled the IC off and after some closer inspection I figured it would not be worth it to try and replace it as the burn is quit severe and for the other stated reasons; I don't know what cause it and it it was resolved.

I just received my replacement probe and took a look at the ICs and the 2 right next to each other appear to be the same. The marking is C17F. I don't have time to poke around with it. I just needed it to get back to work!

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MBedder
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Posted by MBedder: Sat. Jul 21, 2012 - 06:22 PM
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It seems to be an SN74LVC1G17 - a non-inverting single Schmitt-trigger buffer.

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