Thank you; I will give you more information:
- with my carte PCB: When I upload the program with USBasp everything works well, but when I disconnect and connect the power the program deosn't work correctly.
- with Arduino MEGA2560: The same program work perfectly even that when I disconnect and connect power again.
- With my carte PCB: When I upload a simple program (blink) the program work perfectly even that when I disconnect and connect power again.
- thanks Deltaflye: I will add a 100nF capacitor between GND and VCC Atmega 328 and check again.