I have some trouble programming the 16F84 using a Ludipipo programmer.
After 20-30 times of reprogramming suddenly the chip can«t be
reprogrammed anymore, the programmer beleave that it is erased when I do
a blank-check, but it can«t put any new code into it. When I put it back
into my circuit the old program is still there, working fine. So far
I«ve destroyed 4 PIC16F84-10 this way. Is ther anyone who had the same
problem.