I program with winpic800 and icprog.
programming is normally ok at the end.
reading the 16F877 is also normally
with winpic800 and icprog.
when I delete the pic is also good.
reading indicates 3FFF ... ... so it's good 3FFF
but I do not understand why the pic does not work with any program! ?....
Hard to help you with this we have not any thing to go by
There a lot of things that can go wrong bigest is you tried to build on the desktop
and not a C:\ myfile\firsttry.asm
I have had a 16f877 stop working and all it was is the osc stoped working. I wouldn't throw it away
it's more likely something your doing.
You building this on a solder less bread board right try two things first clip a gnd on the OSC to gnd see if that works If not remove c5 and c4 and see if that works
This is what get's me Op ask for help with this but no code has been posted and they said they tried it with a 16f84 and no go. If you look at the circuit for 16f84 it has a 4 mhz crystal so if you left the 20mhz on the board it wouldn't work the start up delays would be to fast for the lcd.**broken link removed**
I can't read that maybe if you want this fix you would take time to post it so we can help you. a hex is not much good if some thing goes wrong you need the code
If you look at my post since the debut, kept silent will see that it is an assembly (editing) of electronique practice ( alarm ) with one 16f877 and a quartz of 20mhz.
My probléme it is to know if my 16f877 is good....?
Still need the source code not a hex I can build them and write them
It's hard to help you because we can't see what your doing and your writing is worst then mine