MCUmall EPROM BIOS Chip Burner Forum
MCUmall EPROM BIOS Chip Burner Forum
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 Automobile engine ECU, Immo, Air bag chip tunning
 verify M93C56
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ricampr

Portugal
21 Posts

Posted - 04/30/2010 :  12:49:47  Show Profile  Reply with Quote
Hello.
I have an eprom M93C56.
read ok
write ok
verify failed

which may be the problem?

thanks
Reply #1

ZLM

2928 Posts

Posted - 05/06/2010 :  16:21:45  Show Profile  Reply with Quote
What adapter you used?
Check pin contact.
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Reply #2

brchip

Brazil
16 Posts

Posted - 06/26/2010 :  16:48:24  Show Profile  Reply with Quote
I'm having the same problem. I'm using 3M soic8 clip. I used this clip for other chips and it worked fine.

Please help.
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Reply #3

brchip

Brazil
16 Posts

Posted - 06/26/2010 :  16:56:49  Show Profile  Reply with Quote
Same here. I'm usng 3M clip with sw v4.01. Should I upgrade to the latest sw?

I tried different speeds and devices (8 and 16 bits) but no luck.

Any ideas?
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Reply #4

ZLM

2928 Posts

Posted - 06/26/2010 :  21:33:23  Show Profile  Reply with Quote
Are you doing it while the chip on the PCB?
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Reply #5

brchip

Brazil
16 Posts

Posted - 06/27/2010 :  04:40:09  Show Profile  Reply with Quote
Tried both ways. Reads and writes but verifiy gives error.

I tried 8 bit and 16. Is there a way to know which is the correct?
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Reply #6

ZLM

2928 Posts

Posted - 06/27/2010 :  06:32:34  Show Profile  Reply with Quote
I recommend you to remove the chip from PCB and put it in the adapter to read and write.

That way is the standard programming way.
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Reply #7

brchip

Brazil
16 Posts

Posted - 06/27/2010 :  16:39:21  Show Profile  Reply with Quote
I already did, but it always gives an error in the verification.
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Reply #8

ZLM

2928 Posts

Posted - 07/01/2010 :  09:50:01  Show Profile  Reply with Quote
use slower speed.

See:
www.youtube.com/watch?v=ibd910i48CE
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