Atmega 329P U-TH vs AU

Other Hardware 3rd Party Boards
1

Hello,

I have a program realized with IDE for a PCB where I'm using the Atmega328P U-TH. This microcontroller doesn't work, but if I run my program and blink program on a Atmega328P-AU yes. Does somebody know what can happen?

-My PCB doesn't have glass
-In both cases, I burn the bootloader and charge using programator with Atmega328 8Mhz internal clock.

I have 100 Atmega328P U-TH and any AU, because this I'm really interested on run with that I have, can be something of fuses?

Thank you,
Roger.

2

can be.
you say you used programmer to burn the bootloader. was it successful?
if yes, you can copy the fuse setup from AU to U-TH

3

I'm guessing that this is Google translate for crystal (oscillator) but the OP is probably long gone by now.