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Trouble in using ATMEGA2560 sparkfun SMD chip in eagle#185888

By rajibgupta - Fri Nov 13, 2015 10:31 am

- Fri Nov 13, 2015 10:31 am #185888

I am designing a SMD PCB which includes ATMEGA2560AU OF sparkfun-Digital IC library with the package value of TQFP100 . When i run a DRC check using the sparkfun .dru file it shows clearance error between the SMD IC pads. Why does it show this error ?

Re: Trouble in using ATMEGA2560 sparkfun SMD chip in eagle#186380

By Ross Robotics - Mon Dec 07, 2015 9:45 am

- Mon Dec 07, 2015 9:45 am #186380

Because the pads are too close together according to the settings in the DRU file. According to Sparkfun, the TQFP 's pads are less than 6mil apart. I do know that most board houses will manufacture the board even though this is just below spec. You may also want to research the design specs at your chosen board house.

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