[Usbpicprog-technical] PIC16F876A fail to program

[Alexandre R. <ale...@gm...>]

Hey

I have build a USBPICPROG through-hole version board and want to thank you
for the good job in this project.

I was able to program a 16F877A without any problem but with a 16F876A the
programming has failed.

16/4/2012 13:50:32: Erasing before programming...
16/4/2012 13:50:32: Erase OK
16/4/2012 13:50:32: Programming the code area of the PIC...
16/4/2012 13:51:05: Write Code memory OK
16/4/2012 13:51:05: Programming the data area of the PIC...
16/4/2012 13:51:05: Write Data memory OK
16/4/2012 13:51:05: Verifying all areas of the PIC...
16/4/2012 13:51:06: Verify code failed at 0x0. Read: 0xFF, Expected: 0x0A
16/4/2012 13:51:06: Programming configuration area of the PIC...
16/4/2012 13:51:06: Error programming config memory
16/4/2012 13:51:06: Operations completed with errors/warnings

In this case the 16F876A had been previous programmed with a PICKIT3 and
was erased or bad programmed by USBPICPROG and did not work after this try.

I try an external 5V power supply to do the job of USB BUS supply with no
results.

Any suggestions ?