Re: [Usbpicprog-technical] cant program the PIC

[Frans S. <fra...@gm...>]

Hi Balint,

I have never tested the 16F628, because it is obsolete but it' s 
follower the 16F628A should work. The 16F84A should also work but that 
one is very critical about the voltages. Could you measure VPP and VDD 
while programming? preferably with an oscilloscope, but if you don't 
have it try using a multimeter while the programming is in progress.

Kind regards,

Frans

Op 1/21/2013 10:01 AM, Bálint Gyenes schreef:
> Hi,
>
> I build the through-hole version of the usbpicprog. Everything looks
> fine, but when I try to program a PIC, I get this:
>
> Erasing before programming...
> Erase OK
> Write Code memory OK
> Programming the data area of the PIC...
> Write Data memory OK
> Verifying all areas of the PIC...
> Verify code failed at 0x0. Read: 0x00, Expected: 0x12
> Programming configuration area of the PIC...
> Error programming config memory
>
> I tried it with two PICs, a 16F628 and a 16F84A, the programmer
> detects both, but at programming the situation is the same.
> I checked the circuit, it looks correct and the I/O test gives the
> required voltages on every pins.
> Could it be the problem that some of the mounted transistors
> (bs170,bs250, bc547) can't provide enough current?
>
> Thanks for the reply.
>
> Best Regards,
> Balint
>
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