Post by thread:[PIC:] How to check if PIC is damaged?

Hi, Is there a way to determine if a PIC is damaged? On two PIC's I have the following symptoms: - When I put it in programming mode I can read from it (can verify that the chip id is a 16f628). - I cannot write anything to it. (writing and then verifying the written data always fails) - I have three 16F628's. Two out of the three always exhibit the above behaviour, the other one works fine. - This started to happen after trying to build a wisp628 on stripboard (which I probably messed up, its my first stripboard project ;-) Before trying to use the 'new' wisp628 all the PIC's worked fine. I'm still having problems with this programmer, but the original one I built on solderless breadboard still works fine and that’s the one I'm using for the above tests. PS: Yes, I'm going to order a Wisp628 kit from Wouter as soon as I sort out method of payment from South Africa ;-) -- André Miller -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

> Hi, > > Is there a way to determine if a PIC is damaged? On two PIC's I have the > following symptoms: > > - When I put it in programming mode I can read from it (can verify that the > chip id is a 16f628). Are you sure that it is a 16f628 rather than a 16f628A? Sometimes the "A" version have different programming algorithms. -- D. Jay Newman ! spam_OUTjayTakeThisOuTsprucegrove.com ! Xander: Giles, don't make cave-slayer unhappy. http://enerd.ws/robots/ ! -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

> Hi, > > Is there a way to determine if a PIC is damaged? On two PIC's I have the > following symptoms: > > - When I put it in programming mode I can read from it (can verify that the > chip id is a 16f628). Are you sure that it is a 16f628 rather than a 16f628A? Sometimes the "A" version have different programming algorithms. -- D. Jay Newman ! .....jayKILLspam@spam@sprucegrove.com ! Xander: Giles, don't make cave-slayer unhappy. http://enerd.ws/robots/ ! -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

Yes, double-checked them. And they used to all work before I started messing with my DIY programmer :-) _____ André Miller -----Original Message----- From: pic microcontroller discussion list [PICLISTKILLspamMITVMA.MIT.EDU] On Behalf Of D. Jay Newman Sent: 16 February 2004 11:36 PM To: .....PICLISTKILLspam.....MITVMA.MIT.EDU Are you sure that it is a 16f628 rather than a 16f628A? Sometimes the "A" version have different programming algorithms. -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

Yes, double-checked them. And they used to all work before I started messing with my DIY programmer :-) _____ André Miller -----Original Message----- From: pic microcontroller discussion list [EraseMEPICLISTspam_OUTTakeThisOuTMITVMA.MIT.EDU] On Behalf Of D. Jay Newman Sent: 16 February 2004 11:36 PM To: PICLISTspam_OUTMITVMA.MIT.EDU Are you sure that it is a 16f628 rather than a 16f628A? Sometimes the "A" version have different programming algorithms. -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

I don't know off of the top of my head if the 628 has unresettable code protection or not, but that sounds like the kind of error you might get from setting a code protection bit. At least, that's what caused a similar problem in my world a few weeks ago. Mike H. {Quote hidden}>Hi, > >Is there a way to determine if a PIC is damaged? On two PIC's I have the >following symptoms: > >- When I put it in programming mode I can read from it (can verify that the >chip id is a 16f628). >- I cannot write anything to it. (writing and then verifying the written >data always fails) >- I have three 16F628's. Two out of the three always exhibit the above >behaviour, the other one works fine. >- This started to happen after trying to build a wisp628 on stripboard >(which I probably messed up, its my first stripboard project ;-) Before >trying to use the 'new' wisp628 all the PIC's worked fine. I'm still having >problems with this programmer, but the original one I built on solderless >breadboard still works fine and that s the one I'm using for the above >tests. > >PS: Yes, I'm going to order a Wisp628 kit from Wouter as soon as I sort out >method of payment from South Africa ;-) > > >-- >Andri Miller > >-- >http://www.piclist.com hint: PICList Posts must start with ONE topic: >[PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads _________________________________________________________________ Click, drag and drop. My MSN is the simple way to design your homepage. http://click.atdmt.com/AVE/go/onm00200364ave/direct/01/ -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics

Andre, On Mon, 16 Feb 2004 23:36:32 +0200, Andre Miller wrote: >...< > PS: Yes, I'm going to order a Wisp628 kit from Wouter as soon as I sort out method of payment from South Africa ;-) Just send him a Krugerrand - I'm sure he'd accept it. Better yet - send it to me and I'll send Wouter the Euros for the Wisp628! :-))) Cheers, Howard Winter St.Albans, England -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.