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CCSLOAD / MACH X erasing problem

 
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EmmKay



Joined: 23 Dec 2009
Posts: 3

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CCSLOAD / MACH X erasing problem
PostPosted: Wed Dec 23, 2009 11:56 pm     Reply with quote

Hi All,

It might be a simple question to answer but none the less it has got me confused. I am working pic 16f822. When I erase the chip, ccsload displays that the erasing has been successful. So when I go into verify chip is blank it comes up with the message 'chip not erased'. Because of this the writing to the chip is not working.

Also the file info shows the target chip field to be blank, while all other options in CCSload recognise the chip as being the correct one.

Any help / insight is much appreciated.

Cheers

CORRECTION it should say 16f882 and not 16f822... My typeo..!!!!!

EmmKay


Last edited by EmmKay on Mon Jan 04, 2010 1:33 am; edited 1 time in total
wwinch



Joined: 29 Dec 2009
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PostPosted: Tue Dec 29, 2009 6:11 pm     Reply with quote

If you figure it out, please update. I have the same problem.

I haven't used the Mach X in a year or more, so went thru the whole update to CCSLOAD/firmware business. Now I can't erase a 18LF2680 in the ZIF socket. Have not yet tried a different chip or programmer.
EmmKay



Joined: 23 Dec 2009
Posts: 3

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PostPosted: Sun Jan 03, 2010 10:35 pm     Reply with quote

I have had no luck with my issue!.. does any one have any insight that they can offer!!!!! any hint to look into a particular direction..?????
PCM programmer



Joined: 06 Sep 2003
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PostPosted: Sun Jan 03, 2010 11:33 pm     Reply with quote

Quote:

I am working pic 16f822.

Does any one have any insight that they can offer?

If I go to the Microchip website and use their search engine to search for:
Quote:

16F822
or
PIC16F822

Then I get this response:
Quote:
Your search PIC16F822 did not match any documents

It's also not listed in the Microchip Data sheet finder page:
http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=2046
EmmKay



Joined: 23 Dec 2009
Posts: 3

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PostPosted: Mon Jan 04, 2010 1:32 am     Reply with quote

MY BAD.. it should be 16F882.. I made a typo and and being brainwashed in trying to figure out the problem kept reading the 16f822 as 16f882...

cheers all..
PCM programmer



Joined: 06 Sep 2003
Posts: 20136

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PostPosted: Mon Jan 04, 2010 1:55 am     Reply with quote

What is the Vdd voltage of the PIC ? Is it 3.3v ? The CCS programmer
may be doing a bulk-erase operation, and that won't work if the Vdd
on the 16F882 is less than 4.5 volts.

Also, to find out what sections are not being erased, use the CCS
programmer to read the PIC. Then look at the program memory and
the Config bits that have been read.
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