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Forum Index : Microcontroller and PC projects : programming 16F628A

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palcal

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Joined: 12/10/2011
Location: Australia
Posts: 1989
Posted: 08:43pm 21 Feb 2016
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Trying to program a 16F628A with my PicKit3 it connects OK but gives an error message Device ID does not match. I have checked my setting OK. I tried to program anyway but programming failed.
Any ideas.
Paul.
"It is better to be ignorant and ask a stupid question than to be plain Stupid and not ask at all"
 
Frank N. Furter
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Joined: 28/05/2012
Location: Germany
Posts: 947
Posted: 09:13pm 21 Feb 2016
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Hi Paul,

is your PIC self powered? Did you use 5V or 3V3? Did you have a connection between VCC of the PicKit and your PIC?

Frank
 
palcal

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Joined: 12/10/2011
Location: Australia
Posts: 1989
Posted: 09:28pm 21 Feb 2016
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Yes it is powered by my Bench Supply I have programmed a lot of PICs before and never had a problem. I think maybe a faulty chip, I will get another next time I go to town.
Paul.
"It is better to be ignorant and ask a stupid question than to be plain Stupid and not ask at all"
 
WhiteWizzard
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Joined: 05/04/2013
Location: United Kingdom
Posts: 2934
Posted: 09:32pm 21 Feb 2016
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Paul,

Sometimes the PicKit3 software will reply with this error even though the selection is correct.

Couple of things to check/try:
1: Ensure the reset pin is pulled high (10k)
2: Ensure you have a decoupling cap close to PICs power pins (100nF)
3: If in a breadboard - move circuit to a different position (cheap breadboard issue that keeps appearing on this forum!!)


If all above ok, then just try programming anyway - it may well work.

The early MaxiMites I had the Device ID error, but was able to program and successfully use the PICs.

Good luck . . . .

WW

EDIT: The debugging feature of the PicKit3 may not work with an 'incorrect Device ID'; but programming will (or should!!)
Edited by WhiteWizzard 2016-02-23
 
palcal

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Joined: 12/10/2011
Location: Australia
Posts: 1989
Posted: 10:29pm 21 Feb 2016
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Not a Dreadboard and I tried programming anyway but it didn't work. I will look at your other suggestions especially the decoupling, I know my bench power supply is a bit dirty so I will try powering from a cleaner supply.
Paul.
"It is better to be ignorant and ask a stupid question than to be plain Stupid and not ask at all"
 
Frank N. Furter
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Joined: 28/05/2012
Location: Germany
Posts: 947
Posted: 11:05pm 21 Feb 2016
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I had the same problem last week with a 12F629 - always an error message: Device ID does not match!

I tried a old board revision which worked in the past with the same 12F629 on it and got the same error!

Now I tried IPE instead of MPLAB and all was working without any trouble?!

I don't know why my MPLAB suddenly doesn't worked with my PicKit 3...

Paul, try another program (PicKit 3 standalone software, MPLABX, IPE, MPLAB) to program your chip...

Frank
 
paceman
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Joined: 07/10/2011
Location: Australia
Posts: 1329
Posted: 01:53am 22 Feb 2016
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Paul, I flashed one of these a few weeks ago with the PiKcit3 and V2.26 of IPE - I'm using it for a capacitance meter a la Roman Black. As I remember it complained the first time I tried and then worked the second time. The supply is a good bench one.

Greg
 
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