first i want to tell that i have made a board with a atmega2560-16AU
i have put the required components like a cristal and 2x 22pf capacitors.
also the decoupling capasitors.
to burn the bootloader into the chip with the ISP connector is working i think,
because my USBASP 2.0 adapter is blinking and the arduino IDE tell’s me that it
is done. i did also the trick with the Fuse D8 change to D9.
i can program a small blinksketch to it and the led to test i have set on PA7 (AD7) pin 71 (digital pin 29)
but the led is not blinking at all…
now i have read that not all cristals will work, can someone tell me to if i can use this small SMD cristal 16Mhz see this link for the datasheet. or do i something wrong with programming maby?
this is the name: QANTEK 16MHz Crystal ±20ppm SMD 2-Pin 5 x 3.2 x 1.1mm
I place also a picture of my CPU connections what is now on my PCB
Hope someone can help me out.