stupid error migrating from pic16f628 to 628A

[blisca]

In this world we are 6 billions,so there is a reasonablance that someone
else did the same error

i simply turned my programmer(Willepro ,a good amateurish programmer) from
one device,16f628 to another 16f628A

doing this the configuration word that was good for re-programming 16f628
set the 16f628A in protected all mode

well,it is just about 3 ics,less than 6 euro,but i 'm not used to throw away
anything until i'm shure that there are no more ways to recover it

the question is:no way to erase it completely so it can be used more and
more again?

thanks

 

[David L. Jones]

In this world we are 6 billions,so there is a reasonablance that someone
else did the same error

i simply turned my programmer(Willepro ,a good amateurish programmer) from
one device,16f628 to another 16f628A

doing this the configuration word that was good for re-programming 16f628
set the 16f628A in protected all mode

well,it is just about 3 ics,less than 6 euro,but i 'm not used to throw away
anything until i'm shure that there are no more ways to recover it

the question is:no way to erase it completely so it can be used more and
more again?

thanks

All of the PIC flash parts (including the 16F628A) can be re-
programmed as many times as you need it. The protected mode does not
prevent you erasing the chip and re-programming.
If for some reason your programmer does not somehow support this then
get one that does. Perhaps there is an option you have missed?

Dave.

 

[blisca]

All of the PIC flash parts (including the 16F628A) can be re-
programmed as many times as you need it. The protected mode does not
prevent you erasing the chip and re-programming.
If for some reason your programmer does not somehow support this then
get one that does. Perhaps there is an option you have missed?

Dave.

thank you but still looks otp-like
i use the configuration word 03A2,after programming the first time i have
the indication "error blowing fuses",and no way to program it again....
i'm desperate ,it is 4:32 am here and i have to finish before 9:00 :-(

 

[AJ]

In this world we are 6 billions,so there is a reasonablance that someone
else did the same error

i simply turned my programmer(Willepro ,a good amateurish programmer) from
one device,16f628 to another 16f628A

doing this the configuration word that was good for re-programming 16f628
set the 16f628A in protected all mode

well,it is just about 3 ics,less than 6 euro,but i 'm not used to throw
away
anything until i'm shure that there are no more ways to recover it

the question is:no way to erase it completely so it can be used more and
more again?

thanks

http://support2.microchip.com/KBSearch/KB_StdProb.aspx?ID=SQ6UJ9A003LD0

I don't like 628's....

 

[blisca]

http://support2.microchip.com/KBSearch/KB_StdProb.aspx?ID=SQ6UJ9A003LD0

I don't like 628's....

wow...funny..

 

[blisca]

http://support2.microchip.com/KBSearch/KB_StdProb.aspx?ID=SQ6UJ9A003LD0

I don't like 628's....

forgot to say thanks and sorry,unwillingly i opened a 2nd thread

 

[petrus bitbyter]

http://support2.microchip.com/KBSearch/KB_StdProb.aspx?ID=SQ6UJ9A003LD0

I don't like 628's....

As for the configuration bits, /MCLR is enabled so it is not used for input.

As far as I learn from MPLAB, the configuration word "03A2" is accepted for
both the 16F628 and the 16F628A.

It is said that the programming algorithms for the 16F628 and the 16F628A
differ. Both have their own specifications but I did not compare in detail.
It is rumoured that using the wrong algorithm may do damage to the device,
though I did not find a confirmation so far.

AFAIK the only thing you can do is finding another, high voltage, programmer
and trying to perform a bulk erase. I can try it for you, but I don't think
it to be cost effective

petrus bitbyter

 

[Marra]

MPLAB will erase it for you.

I use the PICSTART by Microchip.

Why buy cheap rubbish instead ?

 

[blisca]

Subject: Re: stupid error migrating from pic16f628 to 628A

MPLAB will erase it for you.

I use the PICSTART by Microchip.

Why buy cheap rubbish instead ?

one good reason could be that at that time willepro fit my budget ,and was a
good choice for the hobbyst,being able even to program other devices(flash
memories,atmel devices and so on)
of course i would like a more microchip-oriented programmer,with the ICD
option

thanks to Marra,Petrus,AJ and David