shendu
Newbie level 3
can anyone help me? the osillator can work, there are signal on ALE pin, I make the pcb by myself, but we i plug the usb bus, the xp system says that it can detect it ,"unknown device"
is it the problem of at89c5131 (don't have a bootloader ) or the problem of my schematic. wish a expert to help me?
my email: wxzhao@yahoo.cn
can anyone help me?
Added after 19 minutes:
this is my design
is it the problem of at89c5131 (don't have a bootloader ) or the problem of my schematic. wish a expert to help me?
my email: wxzhao@yahoo.cn
can anyone help me?
Added after 19 minutes:
this is my design